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. (00:16:00)
Other mistake: When King Richard asks the chef if there's lemon in his tea, he replies "Yes, my king. Some 'and-squeezed lemons." The closed-captioning says "Some unsqueezed lemons." (00:15:40)