You can register each person at the link above and pay the deposits. You do not have to put the passport information if you do not have it yet. That can be done later.
The registration and payment system is being run through the ACTIVE data payment software. They charge a one time $6.19 processing fee per person for registering.
You register and pay the entire amount or you can just pay the $300.00 deposit. The system then automatically charges the rest to your credit card or e-check through a payment plan.
Deposit - Due upon Registration $300.00 + $6.19 processing fee for registration
Payment can be made in full or by choosing 1 of the payment plans