Just state your needs as clearly as possible: 1) I need a handicapped accessible room
with a roll in shower. 2) I have a party of
4 adults. 3) I would like to stay at
____ resort, from
____ to ____ dates.
The CM should then verify availability with special reservations, and will let you know if they can accomidate your needs. I would not expect them to tell you at that time whether or not the accomidations will be a) all in one room with double beds (sleeps 4)... or b) a hc room with a king bed (sleeps 2) and an additional, connecting room (for the balance of your party).
Special reservations blocks out a room(s) for you at the time of the reservation. But things happen, and it may end up that they need to switch/adjust your room asignments out of necessity at a later date. This, in part, is why they will not tell you any specifics. Potential for abuse of the system (by people who do not actually need the accessible room, but are hoping they might score a free connecting room) is another reason.