It's a membership card that you can get at Rainforest. It costs $10 (as of when we signed up a few years back), but they mail you a 10.00 certificate, so it's a wash. And then everytime you go, you get 10% off entrees or a free (from a selection) appetizer w/purchase of entree. Also money off in gift shop and priority seating. They also mail you 5.00 cards on your b-day. Apparently, the discount priveleges are also good at T-Rex (but not the priority seating).
Even if you can't use the $10 certificate, might still be worth signing up if you plan on visiting RFC and then T-Rex later in the same trip. 2 free appetizers easily totals more than 10.00 sign up fee-and depending on how many are in your party, the 10% off works, too. Plus, portions are huge, so I usually just eat the appetizer as my meal. When we signed up, we were able to use it on that meal-not sure if that's still the same.
Dont' want to sound like a commercial, but it really is a great savings. Unfortunately you have to sign up AT a RFC location. But if you ask for an ap when you first sit down, they could easily get it processed by the end of the meal.
b/c I'm so new to the board, I can't yet post a link, but just google rainforest cafe and click on the monkey for more info.