It can be very difficult with the poor lighting. Sometimes, you may need to bring a flashlight. Also, shorten the cane (choke up the handle) when traveling along the seating area.

Normally when I go, I can request the caption box (definitely ask for help if it's your first time, they're tricky) and make sure to arrive early when it's bright. The advice about chocking up the cane is great too! I've whacked a few feet by accident when I forget.

Look up if they do an autism showing and go to them. They keep the lights on all the way and make it a lot easier. Otherwise ask someone for help, you can even ask them to come get you after the movie is over.

I usually just ask ushers for assistance. I like to see about audio description first, then purchase snacks and see if someone will please help me carry my snacks to a free seat. usually getting out is easier than entering, as I normally have a ride to call to pick me up and I can normally locate the lobby easily with my cane.