Jennifer:
Although my experience at most Disney table restaurants has seen our meals average around an hour and a half, eating at a buffet restaurant like
Chef Mickey's puts you in charge of your dining time instead of the cast member or kitchen. I would recommend that you arrive early, however, by at least 20 minutes so that you might be able to be seated on-time. Additionally, let the cast member serving your table know what your timetable is so that you can get your check earlier.
If your plan is to watch Wishes from the hotel, be aware that the fireworks are not viewed from the same side of the hotel as the
Electric Water Pageant which is normally scheduled for 10:10 p.m. at the
Contemporary. On the nights when Wishes is shown at 10 p.m. it begins shortly following the fireworks.
Wishing y'all a magical vacation!
Whitney