Howdy, I "live" in Phoenix during the week for job purposes. Right now, I have the use of an apartment but I'll be using my Intravec Horizon (Predecessor to the Falcon) in the Fall.
I plan to utilize "Stealth Vandwelling". but you'll like the KOA for temporary parking.
I'd suggest getting a Good Sam Club membership as it includes a discount at KOA's. Also, a memborship in Camping World's thing includes a FREE night at KOA, too.
Check out the RV Bookstore at www.rvtravel.com
and you'll find books that explain all your questions about first-time camping and use of the RV. (Class B, which you have, Class C or A are all similar in appliances and hookup.)
Any help I can provide about the area, feel free to ask. I'm a Phoenix native.