Ready to plan your party? This planner will gather the information we need to make your party a success and give you a cost estimate. If you haven't yet read about our activities and party packages, you may want to take a minute to do so before starting. There are five easy steps to plan your party: 1 Tell us a little about yourself 2 Pick a party package 3 Pick date preferences 4 Customize your party with premium add-ons 5 Review your plans and submit them to Chelsea Piers Remember, while this planner is a convenient tool to organize your next event, reservations are not final until confirmed by a Chelsea Piers Event Representative.