We have never had this problem in any RV park, until now. We made a reservation at a very nice upscale RV park 8 months ago and made a $400 deposit on our month-long stay. When we arrived we were told we would have to pay $160 more for our reservation because the rates went up a couple of months ago. We could have forfeited our deposit and tried to find accommodations elsewhere, but reluctantly paid the extra amount. We have made reservations for hotels, rental cars, airlines, and cruises, and without exception the rate that was in effect when we reserved was the one we were charged. Does it make sense that you could get to the airline terminal and be told that the seat you bought cost more now?