Nav is pretty easy. Most of it you will do without even looking at the compass
. As landmarks are all very straght forward. ( big island -little island- oh that must be dent passage- kind of thing.)
Due to the high tourist population the charts
are all great. There will also be a book on board called the 100 magic miles.(they all have them). Its a very good companion to read the night before. I would even recomment buying
your own first and studying it at home. It will build excitement at the very least.
Aside from bumping into a sleeping humpback, about the biggest random danger
will be overfalls. Strong eddies that occur during flood and ebb tides. Theses are also well documented and are easy to see on the water
at most times. Having said that, I havent heard of a boat that has been lost
up there due to these phenomena, but its possibly happened. They are obviously a pain to racers who havent experienced them before.
Just about every other rock,wreck, and outhouse should be on your charts. If not, they will be in the 100 miles book.