Living in Yuma, AZ I pretty much fly out of Phoenix every time I travel.  The airport is huge.  If you are flying to or from Yuma put your running shoes on.  Connecting times in addition to delays will sometimes leave you with 10 minutes to get to the next gate that is like 1/4 mile away.  My suggestion is to flag down one of those speedy cart guys.  food options are decent.  there's a cool Tex-mex place in Terminal A.