Because this is a luxury, all-inclusive resort, room costs are per person, per night, and are based on the number of adults sharing the room. "Double" means 2 adults sharing a room.
Every person attending must pay the per person, per night room cost.
Pricing example: 2 adults sharing a Junior Suite Tropical View King room for 4 nights would multiply $375 by 4 nights to get a price of $1500 PER ADULT. The total cost of this room would be $3000.
Prices include all meals, snacks, drinks, entertainment, activites, airport transfers, and taxes.