When you rent the reservation, be sure the DVC Owner OR the broker from whom you rent makes that request for you with Member Services, that you be in a building number above 30. It isn't guaranteed, but I think you'll have a very high chance of success.
Or you could request an area like Old Turtle Pond or South Point, all of those units are 30 or above, but again any request is not guaranteed, but has a high chance of success.
BTW. I edited your post to remove the travel month. We try not to have too much info in posts that could be perceived as requesting a rental.