Under Hyatt's Gold Passport rewards the schedule includes options for upgrades -- both to suites and club level (which will be found in their resorts).

Trouble is that the Ts and Cs mandate that any upgrade must be from a rack or close-to-rack rate (whcih can be mighty pricey).

So, all-in-all, I'd just as soon take my chances in a Marriott resort for a complimentary upgrade (and/or) breakfast.

And once-and-awhile it's not unknown that a relative pittance will net a suite upgrade. My wife still smiles when recalling our upgrade (@ $30. per night), in the Curacao Marriott Resort for one of their one bedroom "*terrace suites."

*These days much, much pricier.