We are a family of 5 (kids who will be 15, 12 and 7) at cruise time about a year from now and are thinking of 2 interior cabins next door to one another. The category 11 inside staterooms have the bathroom that is all in 1 room. The next category up, DELUXE interior stateroom have a "split bath". What exactly does that mean? Is the toilet area separated? Is there an extra sink or is their a separate shower from the tub? My son is saying he doesn't like tub/shower combos and prefers a separate shower stall but would that be an upgrade to a much higher category?