Question: Why didn't the aunts just tell Miguel that Ernesto De La Cruz wasn't his grandfather when Miguel was rambling about it when he entered the Land of the Dead?
Answer: The aunts may not actually know. Because his ancestor hated him so much, she may have talked about him very little in both the real world and the afterlife.
Answer: Because Miguel didn't unambiguously talk about his wrong assumption. In other words, he never said, "my grand-grandfather and Imelda's husband, Ernesto de la Cruz" (which is wrong). He only called him grand-grandfather and Imelda simply referred to him as a good-for-nothing musician. The aunts, uncles and the grandfather Julio all knew about Hector, as can be inferred from the reunion scene.
Question: When Miguel first meets Hector, Hector claims he used to work with Ernesto, who Miguel initially thought was his great-great grandfather. When Hector confronts Ernesto after Miguel first meets him, Hector reveals how Ernesto murdered him with poisoned wine. Why doesn't Hector tell Miguel that earlier when they first meet?
Answer: Because Hector didn't realise he had been poisoned until The scene where they meet. It is only after he sees the scene from Ernesto's movie that he puts it together.
Exactly. It's shown in the film that Hector, and other souls, believe he died from eating bad food. Hence his embarrassing nickname.
Question: After Miguel comes back to the land of the living, does the family believe that he went to the Land of the Dead? And if not, then do they believe that Hector got murdered, since the letters to Coco prove that he was the writer of De la Cruz's songs? And if they believe, do they manage to prove this to the general public and that is why they hate him? Or do they just hate him because they discovered that he lied about writing his own songs?
Answer: It is never actually addressed what Miguel told his family about his adventure, so it can't be said whether or not they believe him. It would seem to make sense that he would tell them though, it was a pretty fantastic tale after all and I'm sure he would want to tell his family about it. It would also make sense that his family would believe his story, it's really the only way he could have known that Remember Me was a lullaby Hector used to sing to Coco. The letters Coco saved prove that Hector was the actual writer of De la Cruz's songs and it was later proven to the general public, hence the graffiti on De la Cruz's memorial and a memorial for Hector taking it's rightful place in town. It can also be reasonably assumed that the general public is aware that De la Cruz murdered Hector since the theft of the music and Hector's death go hand in hand. It wouldn't make much sense for people to hate De la Cruz so much if all they thought he did was take credit for his partner's music after his partner was already dead.
Question: After Chicharrón is forgotten and disappears, where does he go?
Answer: No one really knows, perhaps the 'true' afterlife, though that is entirely speculation.
Question: If Ernesto stole Hector's guitar, why wasn't he cursed too?
Answer: The criteria for being cursed were never accurately established in the film. All we have is the words of the specialist: "You're cursed. [...] Dia de Los Muertos is the day of giving to the dead! You stole from the dead!" This seems to imply that the act of theft must have taken place on Dia de Los Muertos and the owner of the stolen object must have been dead.
Answer: In my opinion, I would say it may have been specified in Hector's will that his guitar would go to Ernesto in the event of early death.
Question: Could someone please identify the character voiced by John Ratzenberger?
Answer: Juan Ortodoncia - he's the one who gets to cross over to the Land of the Living because he's remembered by his dentist. It seems like he also still has braces on his teeth.
Question: Why didn't Miguel become cursed when he stole the chicken leg off the grave offering? Is that when Dante became cursed, since technically he ate the chicken leg so he stole it? Or is Dante just a spirit guide the whole time?
Answer: The chicken leg didn't belong to a dead person. Its legal owner was alive and well. The spirit of dead do not take possession of the offering. They take a spiritual copy of it.The legal owner of the guitar, however, was dead.
Answer: Miguel became cursed not just because he stole an offering, but because he stole from his family. Dante is always a spirit guide.
Answer: Clearly intent has something to do with it. When Miguel took the chicken leg, he wasn't intentionally "stealing" it. When he took the guitar, he knows he's stealing it. His intention is to borrow it, but he knows what he's doing is wrong.
Question: What happened to Ernesto after he was crushed by the bell in the Land of the Dead?
Answer: It's been confirmed that he is still alive, so he'll continue to exist in the afterlife for as long as people remember him in the living world. And considering the "legacy" he left behind, I'd say he's going to remain in the public eye for a very, very long time.
The legacy was actually Hector's and everyone in the living world found out and decided to forget him.
Answer: I believe he died the final death because his skeleton body was presumably crushed. Hope this helps.
Also, a sign with "Forget" has been put on Ernesto's tomb in the living world, which would speed his demise if no-one remembered him.
I think he would suffer a worse fate of being held under the great weight of the bell until he is "forgotten" in the living world. Seeing as people hate him now in the dead world they may leave him there.
Answer: He was trapped inside the bell. He was not crushed. He was probably able to get out but, the family was able to escape before he got out. Also someone probably needed to help get him out.
Ernesto is a murderer and when everyone found out, they hated him. There is absolutely no point in helping him.
Question: What chord does Miguel strum in De La Cruz's mausoleum after he steals his guitar?
Question: Why doesn't Miguel fall through the bridge like Hector? Miguel doesn't have a picture on the table stand.
Answer: Miguel isn't dead yet. He's slowly fading away the more he stays in the land of the dead and will eventually be stuck there just like everyone else. Until he fades away he can still walk on the bridge but he needs a blessing from a family member in the land of the dead to actually get back.
While yes he is not dead, the rest of the movie becomes entirely pointless since this means he could have just walked back. Security wouldn't have stopped him because he is alive so they know that it is urgent for him to cross the bridge.
He can't just walk back. He can walk on the bridge but he can't actually get back to the land of the living unless he gets a blessing from a family member.
It was Miguel taking the guitar that put him in his dead/not dead state, not crossing the bridge. Miguel was already only able to be seen and interact with the dead while they were all still in the cemetery on the living side of the bridge. It stands to reason then that crossing back to where he started wouldn't help.
Question: What discovery does Miguel make while in the sinkhole with Hector?
Question: When you look at Abuelita's ofrenda, the bottom row has more pictures of family members. Where were they during Día de Los Muertos? They couldn't have gone to the true afterlife since they were on the ofrenda right?
Answer: I believe they are in-laws. Hector said when trying to cross the petal bridge when impersonating Frida that he was probably on lots of ofrendas. So they could be visiting other family ofrendas. Also we saw that the riveira family didn't cross the bridge all at once as the twins came later so they possibly crossed over before the Miguel situation happened. Also when they went back to see Mama Imelda, they went back to an office where a lot of people were being held up like it was customs. So they also possibly could have affairs to sort out before being able to cross. But as the Riveira family made no attempt to contact them when looking for Miguel as they needed a family's blessing I would stick to the assumption that they are in-laws.
Answer: They simply didn't appear on the screen, and the film wasn't about them. That's all. By the way: "Abuelita" means "grandmother" in Spanish. The character's first name was Elena. (You probably know her last name was Rivera).
Answer: These other ancestors may only be faces on the family's altar. Their photographs may still be put up, but if there are no anecdotes to remember them by, their names and faces may not be strong enough to count as being remembered.
Answer: It is never really explained in the movie, but we could assume that whenever someone dies they keep whatever items they had on them. Hector may have had the photo on his person when he died.