Many people stayed at a Marriott during the evacuations of the past two years. I think the founders of Marriott - who were great Christians - would have turned over in their grave. Instead of giving discounted prices (eg even friends and family rates) many actually charged higher rates (last minute, etc). The only Marriott I know who gave a discount was the Buckhead Ritz whose manager did it during Matthew.
What happened to your founding Christian Values Marriott. For Shame!
“You deserve medals”: Marriott guest praises the chain’s generosity during Hurricane Irma
If the price was REALLY crazy, do report them for price gouging. While the hotel's carry the Marriott name, each hotel is run by their own entity. Corporate doesn't set the prices.