If you pay your bill at a Marriott property with Marriott gift cards, you get the same number of Marriott Rewards points as if you paid with cash.

What you *don't* get is the additional 5 Marriott Reward points per dollar you'd get if you charged it to the Marriott Rewards Premier VISA card from Chase.

If you don't already have that card, Chase is currently offering a $75 credit on top of the 50K points, 15 elite nights credit, one free night, etc., that they usually offer. Check here