Who says so? I know only one person who likes to change rooms just to get a change. I change hotel rooms only for two reasons: I'm not fully happy with the place and will come back to the same city/town, so I try to find somewhere that suits me better. When I meet many (one or more every day) boys for free, I change hotel every two or three nights before staff starts to talk about me (or rather say something to the boy). This won't be an issue in Pattaya, as neither staff nor your new friend will care how many else you had in your room.