The pony rides are $3. Children must wear closed toed shoes & be 80#'s or lighter. They end at 5pm (don't know what time they start). They have a nice little petting zoo, too. It's right behind the Trails End Resturant (HooDeeDoo). Couple minutes walk from bus stop and boats marina.
Camp fire & movies are free. You can buy samore makings if you like (I think they are just a few $$) or bring your own.
When we checked into WL, they gave us a schedule of the FW activities. If your hotel doesn't provide it, ask. I'm sure they can get a copy for you.