If your training has holidays during it you will have breaks. As far as I know you'll have all weekends off. Except when you have sim and thats if you have sim scheduled on the weekends.

I would highly recommend taking a vehicle if its feasible. There is a lot to do in Phoenix and the guys without vehicles either, a. stayed at the hotel during pretty much any non classroom time or b. we're always asking the people with a car for a ride places.