Check-in time is 3pm so what gives for their refusal of a 1pm checkout? My guess was they were almost fully booked, and housekeeping was swamped and they didn't want you throwing off their rush to prepare the room for the next guest. Not right.

I think 3,000 makes more sense than 30,000. I'm relatively new to Marriott but 30,000 seems way too high for something like this.

Good for you. If a company doesn't reciprocate your loyalty, then don't show it back.

I had an issue with SPG and decided I would book about $5k worth of rooms elsewhere - Marriott. In my mind, denying them $5k lost revenue makes up for the issue I had with them.