Just get 1 person to check in counter, the rest sit at the lobby sofa. When check in done then the rest follow to the room will do. Normally hotels don't ask but if they do just tell them the extra person is friend come to visit / helping carry luggage will do. But if you tell them honestly they'll just charge you extra bed depends on the FIT rate chosen, they won't ask you to pick another package to fit for >= 4 person cause they also afraid you'll rather go for another hotel nearby