Other mistake: In Naomi Walker's flashback when she gives Goodman her recounting of the evening, she gets the call from her husband when the phone is on the table - she got it with the phone in mid-air as she was standing already, instead. (00:11:10)
Other mistake: JP tells the others that his fiancée cooked him a great meal for the two-month anniversary the other night. Suddenly, the three months anniversary is coming up and he proposes - but just a day passed.
Other mistake: It is never clarified why the victim paid his brother; besides that, the bank statement has the date of April 29 and most facts point at the date being the one the episode is supposed to take place at. The investigative report though refers to a meeting happening in January - would hardly be something the aggressive legal team of the even more aggressive chef would keep on their desk for 3 months.
Other mistake: Dwayne goes through the deleted text messages in Robert's phone. The messages have as dates "Thursday 19" and "Saturday 21st." Given that the year is 2016, the dates are compatible with the month of May, but the episode is set on April 29 - it's the date on the police report for both Matt Holt's background check and the bank receipt Gary Holt shows. (00:19:25 - 00:29:45)
Other mistake: Humphrey's flashback when he is on the balcony of the room is about a sentence he never heard, since the second interview was done by Florence and Dwayne.
Other mistake: Goodman receives the package from the postman, and it is stated that Cedrik bought the watch on the 10th, which is said to be 2 days before his death. His death being on the 12th is inconsistent with both Dwayne's phone desktop (July the 4th) and the message (Thursday 29th). (00:25:20)
Other mistake: It's played as a gag, but still it's quite inconceivable that in "fifteen minutes" it would get pitch dark so that Dwayne can avoid his duties sanding the ship! How much time could he have bought even if he had more excuses up his sleeve? Goodman really can't tell the difference between 15 minutes and a couple of hours? The scene started when it was nowhere near dawn. (00:21:10)
Other mistake: Commissioner Selwyn Patterson puts some pressure on Humphrey and the team saying that "a wealthy tourist has just been killed." But Dan Hagen was not a tourist; he lived on Saint Marie with his wife, as said by the fellow oceanographer Jonathan Taylor, and they have a villa. Someone as well connected and nosy as Patterson wouldn't miss the notion of a multimillionaire living on the island. He also says that he needs to reassure the yacht club that there are no pirates in the area, but it was already established by the coast guard that no ships approached the area. (00:12:15)
Other mistake: Florence closes her notepad and puts the cap back on the pen when Dwayne just begun telling everyone what the Gendarmerie reported about one of the suspects. She has no way to know by that point what Dwayne is about to disclose, and that Humphrey is about to leave with her. (00:17:05)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.