The terminal usually opens at 10:30, and they usually start letting people on the ship around noon. I have heard reports of people getting on as early as 11:30, and as late as 1:00, but I think 12:00-12:30 is the most common.
To add to that...I have never heard of 4:30 being the latest to embark...since the Mandatory life boat drill is at 4:00 sharp...and EVERYONE must attend that...Also the ships have been known to leave earler than expected if weather indicates. I would think 3pm would be the LATEST you'd want to push.
I think of it as the earler I can get on the ship...the sooner we can start enjoying.
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