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Make sure you talk to your sound and light board-ops about what they need you to do before each tech rehearsal and show, and add those things to your checklist (see below).
Make sure you remember to bring the SM Bag and that the first aid kit is backstage in the performance space during performances. Also, post in the dressing rooms who will be in booth what days so that people know who to contact in case of problems/questions that need immediate lights/sounds help.
Sit back, relax, and enjoy the show that you've seen at least a thousand times already (maybe not, but it feels like it) and watch how your audience responds to the production that you got to see take form from beginning to end. Have fun!
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