We have a minimum night stay in each of our accommodations. So if the guest has stayed at least the minimum # of nights in the suite they originally reserved, we will gladly move them to another suite, charging them only the upgrade rate for that suite. If they want to change suites before staying the minimum nights we decline, saying that we have someone else who is interested in reserving the suite. Of course, if there is a good reason for them to move we allow them to move. For example, if the stairs to the second floor are clearly too much for them (even though we told them about the stairs and asked them if they had any difficulty with steep stairs) we would upgrade them (charging the additional rate for the larger suite) no matter how many nights they stayed..