No upgrades for DVC rooms. You pay for what you get. If for some reason every room in your category is filled and. Room goes out of service they would move you to a different resort same room size. Do not ask for an upgrade. Especially if you rent points because sometimes the CMs get confused and they will go in the back room and make a new reservation from that owners points and really mess things up. And yes, it happened to me so don't say they can't do it.