Yes it is. There are ways to work around it at BoG as well, and if some are paying OOP, they still can. The only thing you can't do at BoG is split up the dining plan. All dining plan meals will come off the room that made the pre-order. If you want to use more than one room's plan, see if you can get an ADR for one person from the other rooms around the same time and preorder again.