Unfortunately, you can't choose different Free at Sea perks from your cabinmates. When you book your cruise, you will choose the perks for the reservation, not the individuals. This means that all guests sharing a reservation will receive the same selection of perks. It's important to note that the order matters when multiple people are on a reservation. Some perks are restricted to specific individuals on the reservation. For example, only the first two passengers on the reservation will receive the free dining perk, even though it is selected for the entire group on the reservation.