Scottsdale is not really a "RV friendly town". There are many RV parks nearby in Mesa and Apache Junction, but there are also many "snowbirds" here this time of year.
There are also a few parks closer to us where I-17 meets the Loop 101--which is only 10 miles west of north Scottsdale and some of the ball parks.
The best we can suggest is to start calling some of the parks listed at
RV Park Reviews - Trusted Reviews of Campgrounds & RV Parks and ask about availability.
Don't fret once you get to the Valley...give us a shout and we will try and help out anyway we can if needed.
P.S. There is also a full-service Jayco dealer at I-17 and Loop 101;
www.LittleDealer.com.