Traveling with very young children we weren't sure if the cave experience would be frightening. Turns out they loved it. Guide was excellent, lighting was helpful and added to the fun experience. It is cold and jackets are a good idea in any weather there. The open air bus tour of the wildlife area was good also, again with a well-trained, enthusiastic guide. Huge gift shop was well stocked. Cafe food was mediocre (bison and longhorn burgers, nachos, fries). "Mining" for gems was fun for the kids also. Cave experience not for mobility-impaired. Lots of steps, no elevators.
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