Etcunningham

I have a reservation for a cruise next week, with a 10:30 boarding time. I’m linked to a party that has a 12:30 boarding time. We both have the 3 night dining package, but purchased separately, so the dining package isn’t necessarily linked even though our reservations are. Will I be able to make reservations for myself and the other party once I board the ship at 10:30, or will I need to wait till they get on the ship for us to book together?