Rafting the whole canyon takes the two weeks. But you can do part in a week.
Unless I get vey series about South Beach (or something), I'm pretty sure I couldn't physically do the hike.
The advance reservation is why I'm thinking my 50th birthday. That's still three years (and two days) away...
You might want to look at reservations now.
None of us are keen on the hike... but that means we have to go on the longer trip ;~D
;o) Did you know that Tom Cruise also shares our birthday?