If they are truly sold out, they should be able to "walk you" to a different hotel.I worked in the hotel industry during college and would receive calls from other hotels to do this. Hotels have the ability to call up neighboring hotels and get a room for a discounted rate. Like now that Opryland Hotel is flooded out, all of those people who had reservations in that immediate week or so following the flood were likely "walked" to an area hotel. You should not have to pay a thing at this point, either to your current hotel, or the one they move you to. I agree with PP who said you need to ask not just for the manager on duty but the GM of the hotel. Good Luck!!