Nope, no fees for those activities, there is possibly a skate rental, but not sure about that. Did climb the "wall" on Radiance and there was no fee, same with the mini golf, so go and have a ball!
No fees to rent skates either. for ice katin or roler skating. Although they do not allow shorts or capris. You need to wear long pants and a parent has t sign a waiver giving permission and saying you wont hold rc respnsible in case if inuries.
You have to sign up to do the wall climbing thing and I thnk its only opened for a few hours each day.