I guess the best answer is to consider your experience and the style you are into.
There is room for macro, photojournalism, documentary... If you are going for a certain look, maintain it.
The big rules - no flash, no reflectors. Don't be afraid to ask to be on the floor, but if told you cannot be then respect it. if you are on the floor, keep your eyes open around you and not stuck in the frame. A lot goes on around you.
Fast glass is important,but some very artsy photos have been taken at slower speeds. However, I remember reading that even olympic lighting is staged for f/4, which is why photogs get away with telephoto lenses @ 2.8. In highschools I struggled to hit 1/800 @ f/1.4, but that was back when iso 3200 was unacceptable in terms of grain, so your milage may vary based on the camera body you have.
Know your equipment, watch warm-ups, and find something that makes you go 'wow' and catch those moments - but they go by fast.
Good luck!!
Ryan