It depends...if you're not using the Fantasmic dinner package for seating, I'm nearly positive they recommend getting to the theater around an hour and a half before showtime. The theater opens two hours prior to the show. I've been there twice when it filled up and they were turning people away AND it was standing room only, and both were filled (other than the dinner package seating) an hour prior to showtime, good seats having been gone since about the 90 minute mark. One of these times the park was nearly empty, so I'm guessing it fills up every night, or at least close. If I were you, I wouldn't cut it any closer than about 2 hours before the show arriving to the park, then allow yourself 30 minutes to wander over there, get snacks (from Starring Rolls bakery perhaps? YUMMY!), use the facilities, and grab a seat. Once up there, you guys can save seats while people go to the bathroom, but they can't leave the theater at all, or risk getting shut out, regardless of seats being saved. That way, you get there 90 minutes before, definitely get a seat, and don't have to worry about it. Of course, ALL seats are good seats in this theater, but I still prefer the sections towards the center. Sorry for the rambling!