Disney will say the guarantee connecting rooms, but what that means is that you will get connecting rooms, unless something unforseen happens. Technically, if you have 2 adults you could be split into 2 rooms that do not connect, because an adult could be in each room with the children. Usually that won't happen, but if something rare does happen like a pipe breaking and a large block of rooms end up out of commission, you could end up with 2 rooms that don't connect. Again, that does not happen very often, but it does happen.