I don't believe you are able to use your dream pass because the rainforest cafe is not a Disney restaurant. I'm sure somebody will correct me if I'm wrong here though.
I'm pretty sure you can - as I did last October, when I'd just bought my pass, and didn't have any vouchers for any of the restaurants. I told the waitress when I asked for my bill that I had a Dream AP, showed her it, and I got my 10% discount.
The only vouchers I've seen for the Rainforest recently expired at the end of September 08.
I'd imagine that you can as I used mine in Annettes which isn't a Disney Restuarant. I seem to remember that you can use the discount in all restuarants in the Village with the exeption of Planet Hollywood however full terms and conditions can be found here
Annette's Diner is a Disney restaurant.
The 3 restaurants in the Village that are run under licence are Rain Forest Cafe, Planet Hollywood and King Ludwigs
Annette's Diner is a Disney restaurant.
The 3 restaurants in the Village that are run under licence are Rain Forest Cafe, Planet Hollywood and King Ludwigs