My wife and I are visiting family March 2-9 and we need a car rental for this time. They live in the Mesa/Queen Creek area, and we'll be flying into the Phoenix Sky Harbor International Airport.

I don't have much experience with renting cars, so I'd like some opinions as to what my cheapest options are, if there are any good coupons available to bring prices down, or free upgrade options, and finally if there are any good point-earning alternatives.

Thanks in advance!