For the hotels Hyatt Regency Tokyo and Grand Hyatt Seoul, is it possible to sneak in more people than I register? I know it's a terrible thing to do, but I wanted nicer hotels for my sick aunt who really wanted to visit before she can't travel anymore. As I'm paying for the whole 2-week long trip to both Tokyo and Seoul by myself, it's very difficult to not penny-pinch in areas like this. So the question is: Disregarding ethical problems, how possible is this?