BTW - it's $25 cash, not a gift card. Up to you on whether to accept the gift card or not. I'm assuming it was a Marriott gift card?

You definitely should contact the GM re: being told you weren't entitled to the rate you booked, even though you had the proper ID & their rate rules said that ID was ok. You don't want to have to go through this yes/no thing, based on which clerk you get.

Cheers.