I just learned recently that it is not mandatory to declare the exact number of persons who would be occupying the room that you are booking in. Normally, rooms have the standard 2 persons and an additional person means an added cost. Being friendly with the resort reception people, they advised me to just pay in advance for 4 people (for the 2 rooms) and they will just charge later (when we check out) the additional persons. We stayed in the classy resort for 2 nights with the charge of $150 per room, per night. And additional person means $50 per night. And since we followed the advice of the reception people, I just paid for the standard charge for 2 rooms and gave myself a discount.... 2 additional people for free.