We just booked a cruise and got 2 cabins across the hall. I didn’t know that you could book the kids in their own room so we have an adult with each kid in each room. We plan to sleep with the adults in one room and the kids in the other. Mine are 13 and 11. Both dh and I will want to be able to open both rooms and we’d like for the kids to be able to open their room. How does this work?