The helicopter flight was an amazing experience. Booking through Viator in advance meant I didn't have to get stressed about booking trips out there. Once you are in Vegas it is difficult to see the wood from the tress for all the people trying to sell you trips. I don't like big tour groups and this was ideal, a small party of six including myself and my partner were in the helicopter ensuring spectacular and unobstructed views. I was disappointed with the boat part though and would not recommend this as an extra. It is very short, 10-15 minutes and you don't travel any further into the canyon than the people who just paid for the flight and sat on the picnic table watching. In fact I was a little embarrassed when we walked back as the others in the tour could see it had been a waste of time. Overall though the experience left us with big grins on our faces!