I think the only way to do this is to have two seperate room types. SSR does not really have views to choose from, so you could get a 1BR for the first night and a studio for the remaining. I not know your situation, so that is just an example.
You could also go to another resort the first night and then to SSR for the rest of the trip.
If you try to have create two seperate reservations with the same style room, they will eventually bridge the two into one reservation and thus one dining plan.