As a frequent traveler, I know all the best things to do as soon as you board a cruise ship.Sharon FisherAfter spending over 250 days at sea over the past decade, I have some tips for first-time cruisers.As soon as you board, it's important to review safety protocols and unpack your belongings.I like to explore the entire ship as soon as possible, so that I don't miss out on any amenities.When I went on my first cruise in 2016, I had no idea how…