Character mistake: When Will tries to quote the law to the barman, he states that the group must be "accompanied by an adult" in order to drink alcohol with food. However, since he just served Jay, he believed Jay was an adult; and Jay is accompanying the group. Both Will and tha bartender miss this.
Character mistake: Bailey says that Princess Xaria perished before she ever got to see her crown; but when Xaria possess Bailey later, the spirit says she wore the crown to prom.
Character mistake: Bessie's last name is misspelled "Higginbottom" on the newspaper Happy shows her.