I am not 100% sure on this, but I don't think you can. Since its not a Disney restaurant. Yes its on Disney property (DAK & DTD) but they are not owned and operated by Disney.
Maybe someone can verify this, but I think I have heard or read this somewhere before.
This says that reservations are suggested. But maybe you should just call to be safe. I have always wanted to eat there, it is so cool inside! Have fun!
Thanks everyone! No biggie on the dining plan as we are staying offsite. I called and got my ADR's for Rainforest and Sci Fi for the week of Oct. 11-19. Thank goodness I had already made the ones for Kona, Garden Grille and Liberty Tree Tavern. Just for fun I asked if Le Cellier(sp?) had any openings for a couple of the nights and she laughed!!!!