The first room you will enter is the introduction/preshow room. There is limited bench seating. If you can't stand for more than 15 minutes or so, get there early so you can sit.
Contrary to the massive Solomon Victory Theatre sign at the corner of Andrew Higgins and Magazine streets, the entrance isn't there. That's one of the 3 gift shops. The entrance is on the other side.
If you request special assistance, are traveling in a wheelchair/walker or can't stand for short periods of time, get to the lobby area at least 20 minutes before your showtime.