Continuity mistake: When Galavant is talking to Isabella in the tavern, the turkey leg that he's eating is almost a full leg of meat. When it cuts to the shot over Galavant's shoulder as Sid says "When he tells me to fetch, those are my favorite moments," all the meat is gone down to the bone. In the next shot, the leg is mostly uneaten again.
Continuity mistake: In the scene with the squires, right before their song, you'll see the guys laughing. There is a large, older guy sitting at a table. When you see him from the front (closer to Galavant's point of view), he's sitting about halfway down the table. But, when it shows him laughing in a close up from the other end (nearer the banner on the wall), he's sitting close to the end. This changes a lot during the scene.