Know when to go for group space/partial charter. Ms. Landry explains that if your perfect ship is larger than your needs but has the facilities you desire, booking group space on the ship -- rather than a full-ship buyout -- is likely the better solution. Her company has had success hosting groups of as large as 1,000 people on ships that hold 3,500 or more without compromising the desired feeling of exclusivity at events, thanks to large-ship theaters that hold a thousand people or the possibility of deck parties. She also reminds groups that some mainstream ships have luxury ship-within-a-ship concepts, offering smaller groups perks like private key access, butler service and exclusive pools, bars and/or restaurants, which are well-suited to group bookings and offer the bonus of all the facilities of a much larger ship, too.