The compensation for those who volunteer to give up their seat is typically paid in vouchers for future travel on the same airline, not real money. Whether you accept a voucher or demand actual money, you are always given travel to your destination; the payoff is to ameliorate the inconvenience. Same with involuntary DBC; you always still get carriage to your destination and how quickly the airline can arrange it mitigates how much they have to pay. If you must take a flight the next day, as in this case; you get a paid hotel stay and a meal voucher. The stay will not be at the Four Seasons and the meal voucher will not be for Spago, though. I have made use of them on occasion and the hotels, while near the airport, are not bad