Hi Tori
I did the 3 in 1. The most expensive but worth every penny. I enjoyed the boat trip at the bottom of the canyon the best. Sitting on the Colorrado river was fantastic.
The area they take you to by Helicopter after the boat trip is where the Skywalk is. So if you want to do that as well you can. You just pay on the gate about 20 dollars if I remember correctly.
I definitly recommend the 3 in 1. A once in a lifetime experience.
Be prepared for an early start that morning, we had to be on the bus for 4.45 am!!!!!
You have picked a brilliant holiday. You will enjoy yourself tremendously.
Anything else you want to know just ask.
Take care
Darren