On initial checkin get your boat briefing scheduled as early as possible in the AM.
Yeah, this is one thing that kind of irks me with the sleep aboard option. Ostensibly, it's to enable an early departure the next day but (in my experience anyway), it's fully dependent on when you can get them to schedule a chart briefing and/or a boat briefing.
You are doing good if you can get at least one of them done on arrival day so you only have to get the other done on departure day. Maybe it's a way to gate the departures so that everyone isn't leaving at once in the morning.
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