Flight
The Rental Car Center is located within its own building at 1805 E. Sky Harbor Circle South (between 16th Street and 24th Street, south of Buckeye Road). There's a shuttle that runs every few minutes at the curb on baggage claim levels of each terminal.
Hotel
Shuttles to the Wigwam will leave from the front of the Westin at 3pm on Saturday $229/night
Rental Car
Turo is an affordable option for getting around town if you prefer not to Uber or the other car rental companies are pricy.