The exact same thing applies to any type of yield management scheme. Yield management is used by many consumer-facing service industries. The most well-known is the practice of over-booking on airlines. So there you are on vacation with little Jenny and little Bobby and you get to the airport a good hour before the flight, but alas, since you got these incredibly low fares you weren't able to reserve seats and there aren't enough seats left for all of you because more folks checked in for the flight than forecast. So you sit it out, perhaps until the next day, even though Jenny might miss her first day back to school after vacation. That's life.