Other mistake: In the scene where Frasier is in line for tickets for Roz he is talking to Lana on the phone and asks if he can move Kirby's tutoring up "tomorrow" to four right after school because he made plans with Claire later that night. You can see on the sign next to him that the tickets go on sale Saturday morning and Roz had previously said in the beginning of the episode that she wanted to start standing in line Friday so she would be first in line Saturday morning. So it is obvious that Frasier is in line Friday night which would mean tomorrow would be Saturday, which means Kirby being in high school would not have school the next day (Saturday) like Frasier said.
Other mistake: About 2/3s of the way through the episode, Daphne and her ex-boyfriend are at the courthouse where he is getting married. There is a board in the background with the names of the judges listed on it. The bottom judge's name has the "u" missing in the title Judge.
Add timeterry s