Havasu Falls Arizona is definitely the adventure of a lifetime. The best way to get the max enjoyment during your hiking or camping trip into this mystic canyon is to plan.
Consider the weather, then make choices concerning hiking gear. How physically fit are you? I grade the hike a "B," but that's relative to my fitness.
My point is that you might consider taking a helicopter into Supai Village or go by horseback. It's your call.
Here's are links to more great sources of information on Havasu Falls Arizona
Grand Canyon Havasu Falls
Oasis Guides
Havasupai Falls
Havasu Falls
Havasu Falls Grand Canyon
Hiking Havasu Falls
That should get you started nicely on exploring Havasu Falls Arizona...