All of our boat parties are three hours long. The times on our reservations calendar are the check in start times. For the Booze Cruise package the check in is an hour and a half long followed by the three hour boat party. For the Encore and Miami Day Boat Party the check in is one hour long followed by the three hour boat party. The times on our reservations calendar always reflect the check in start times. The check in start time is the time guests must arrive.