I paid $5 and joined the Rainforest Cafe Safari Club. You get a $10 gift certificate to eat at RFC, and you also get a membership card. With the membership card, you get first available seating - meaning if you show your card, you're put on the list for the next available table (for your party size). I think you also get 1 free appetizer per party (per visit) and 10% off of member and 3 guests meals too. (Doesn't hurt to save a buck!!!).
We showed up at the DTD RFC, in August 2002, around 6pm. I showed my card and we were seated w/in 15 minutes (in the gorilla room, I believe).
I don't think the DTD location takes PS's, but the one at AK may. Hopefully someone else can answer that one.
HTH,
Colette