I looked up CatCo's rules. This schedule will work very well for many traveling families and groups.

"Boarding time is 5pm on the first day of your charter. Charter Brief/Boat Brief to be held at 9:00am the following day. The skipper/captain must be present during the boat and charter briefing. An average of 1.5 to 2 hrs is necessary to complete your boat and chart briefing. No charter will be allowed to leave the dock after 5:00pm regardless of the charter contract dates. You must return your yacht to our dock by 10:00am on your last day of your charter. (We recommend you spend the last night of your charter at our docks)."