I never get upgraded at Marriotts outside the concierge level.

Well actually one time for a one night stay at the PHL airport Ren, and last weekend I was given an exec King at a Fairfield.

Marriott is pretty crappy about suites in my opinion, but I noticed a lot of the hotels including full service do not have suites listed in the available rooms, so either the properties do not have them, or they are sold out I guess.