I'll second cacao. The stuff really is a holy thing.
Avoid music festivals, unless you are REALLY comfortable around people or are really experienced with mushrooms. I cannot imagine ANYTHING worse then being in a crowded place while tripping.
I have found that, while on mushrooms, it is EXTREMELY hard to start moving, but once I do, I actually feel pretty energetic. It's that first push to get out of the chair that is the hardest. Once I'm out exploring, the ADD/wonder, generally keeps me moving around, jumping from thing to thing.
Of course, at higher doses, you can just forget about it. For those, I say: find a nice, outdoor place where you're not likely to be disturbed, lie down, and look at tree branches above you.
Very enlightening.
Blessings
~ND
"There are many paths up the same mountain."