No reservations typically but you should call and confirm.
No. But it's good to get there as early as possible. Last time we went we waited in line for nearly 2 hours. And call a few days ahead to confirm what you want, canoe or raft.
There's activities as well, you could be hooked on a harness and you could do some climbing and some activity stuff they have there, be in the air do some activities climbing walking on ropes logs etc
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