From the CBR FAQ II
Boat Rentals
In order to rent watercraft, a guest must be 18 years of age and present a WDW Guest ID or valid driver's license.
Marina Plans for Walt Disney World Resort Guests only
Family Plan- $239 plus tax (non-refundable) - Includes use of boats and bicycles for up to 5 guests for 10 calendar days. This offer is valid only for registered WDW Resort Guests. Boats/bicycles are available on a first come, first serve basis. Boats/bicycles included in this offer must be rented from the Caribbean Beach Marina only. Please call or visit the Caribbean Beach Marina for further details. Other restrictions may apply. (Surrey Bikes are not included)
Captain's Plan- $125 plus tax (non-refundable) - 4 hours of rentals (any combination) of boats and bicycles. This offer is available to all Guests, and boats/bicycles included in this offer must be rented from the Caribbean Beach Marina only. Boats/bicycles are available on a first come, first serve basis.

Safetymom you are the best!
What do you think of this plan? Is it worth it? What about boat and bike availiabilty?
It said that boats must be rented only at CBR marina but could we do this at another resort also?