We are considering [connecting room type and dates]. We need internal access between rooms but would also like each room to be able to close the internal passage independently when needed. Does this room type support that as normal use, and which states require staff arrangements? Which entrances does each room’s key normally control? Please explain permitted use and unknowns. I am not requesting lock alteration or bypass instructions, treating the reply as a guarantee of sound insulation, privacy or safety, or making a booking.