Originally Posted by
travelswithmyself
About declaring them during the booking, yep I see your point. But the rate does not change whether I declare them or not.
I'm very surprised you find this to be the case in Japan. In my experience, I've always seen higher charges there based on occupancy. You also need to be very careful elsewhere. In some countries, there are strict restrictions on room occupancy. Trying to get four people into a room designed for two can get you and the hotel in trouble, and they could potentially invalidate your reservation. You really should always list the correct number of people if you don't want to take the risk. It's like speeding - you may have gotten away with it for years, but that doesn't mean you won't get caught at some point.