I heard that opening day will cost 75.00 to go on it. I am sure that is in addition to the park entrance fee. It used to be 25 bucks years ago, so who knows how much it is now.
No, I would not walk out on it
I prefer to see the canyon the way I did as a kid in the late 50's.....sitting on the edge looking across. Times have changed and its next to impossible to do the things you use to be able to.