Perhaps students making you crazy?
but thank to God we don't start this semester until next monday.
as for the lecturer theme:
As I remember you can find great guide books on your local bookstore,
That can simplify your cruising live.
I already have a few and they are, for me, a great option without staying on the ship so someone can tell you what to do,
"Berlitz complete guide to cruising"
"Frommers Caribbean ports of call"
"frommers caribbean cruises and ports of call"
As I see it with all the info on the net, cruisechat forum, the books on cruising, the travel channel etc. I don't see much need for a lecturer on a ship...