Booked direct or through a third party website? The latter has incurred early drop fees for years, a fact which ironically I learned at IAH. The former might get repriced if you say dropped from a weekly rate to daily rate, but also gets a credit if you were just a day early.

If repriced from 28 to 13 days what would the price be? Presumably repriced from a monthly rate to a weekly rate, and does that change the tax and facility charges? (On a Texas hotel taxes are drastically reduced on a four-week rental, or they were way back when I was doing it).

Was the repricing disclosed on the return charge slip? I assume the renter was flying away early or they just would have said never mind I'll keep it car till the scheduled return?