Check-in begins at 7:00 pm and the boat will leave promptly at 7:30 pm. Dress: Please bring a light jacket or sweater as it can be chilly on the water after the sun goes down. If you are in doubt about the weather for an event, please check the Professionals in the City's website or check their voicemail at 202-686-5990. If this event is postponed due to adverse weather, the website and the outgoing recording will both state that this event has been postponed due to adverse weather. If the website and the outgoing recording do not both explicitly state that the event has been postponed due to adverse weather, it means that this event is still going on as scheduled.