This already applies to all free members. Auto time-out protection (you are automatically put on vacation when about to move on time) is provided to premium members and seems to be a common incentive to upgrade. Auto-timeout protection wouldn't work if players had to make a move before being put on vacation.
Is one move really going to make such a difference if you already have to wait for the player on vacation anyway?
Do not think it fair that a player can seek to go on Vacation prior to posting his/her last move. This provides a clear disadvantage to players not on vacation. The rule should be changed so that prior to a player posting vacation time out, a move is made by the player otherwise no time out can be computor triggered and game can be lost. fgold