I have never once experienced any insects at sea, day or night. Now, funny thing is... one time on our way back to port, we were well into our second day at sea, and a pelican was sitting up on deck. It was laughable. He was tagged. No one quite knew where he came from or how he got there. Fellow cruisers were taking pictures with him. He may have been on the dinner menu that night for all I know. A'ndrea
Depends on your itinerary. South American sailing can have some pretty serious issues. Manaus is a common port for Brazillian cruises and it's located on the Amazon. You're required to have a yellow fever shot if you book it.
For some reason I've had a couple of clients complain about mosquitos from late season Alaska sailings. Last place I'd expect an issue. You'd think the brutal winters would kill them off.
You won't have any issues in the Caribbean though.
LHP You will enjoy the Victory we were on it in December '05 And the Triumph is another great ship we sailed on it last Sept '06 and I am booking the Triumph again tonight or tomorrow for December this year. I liked it so much I have to sail it again.