My husband and I are scheduled to do the raft/hummer trip mid July. Does the Antelope Slot Canyon boat tour take a different route or would we see the same things? There are two boat tours available - 11/2 hour for $45 or 21/2 hour for $70 - which one would be the best and would the last tour of the day be a good choice? We would be arriving early afternoon and was looking for something to do that afternoon or evening. Thanks for any information.