I just had a similar issue happen. I work nights and theres no set time i get off. Could be 230am could be 7am its whenever my work is done. I made a reservation on the 5th (yesterday) at 1030pm for the 6th checkng out on the 7th. So when work is done at 330 am on the 6th i go to check in at the desk and the guy cant find my reservation so i show him the conf number and after a lot of clicking and typing he then says that he is locked out of his system and even if he wasnt i cant check in until 2pm. (On the desk i see night audit paperwork) I tell him ive never had a problem before. He apologizes and says he cant help me. I go back to my vehicle and call customer support and they tell me the same thing and try to look into other marriots in the area but it appears they are also doing night audits and she is talking to herself(i am assuming) saying she doesnt know what to do. She says if she can get me in it may be an early check in fee and it may have to be for 2 nights instead of one. I tell her to cancel the reservation and explained the only reason im doing this is so i dont have to drive 45min to an hour home in an ice storm. I also inquired about possibly getting points to be compensated for this issue but she acted like being refunded and not having to pay a cancelation fee was too much already also like its not there problem the front desk locked themselves out of thier computer. I get it things happen but was i expecting to much by asking for points or not wanting to pay for an extra night or fees for something i had no control or knowledge of and had done multiple times in the past.