We leave in about 9 days to go on a Panama Canal Cruise( 1st cruise ever). Ports of call are Aruba,Cartagena,Panama Canal,Christobal, Limon and Ocho Rios. I would like suggestions on what to pack. I know these areas will be hot. What do I need at night time for dining? This is a Princess Cruise.
Thanks for any help.

Princess cruises tend to be dressier than more informal cruises. You'll need something to dress up in for the formal nights (probably 2 different outfits, one formal and one somewhat less formal. And you'll need the kinds of clothing you'd normally take for a Caribbean vacation.

I would also pack binoculars, wet wipes (it's hot) and you want to sanitize your hands, sunscreen & hat.

Over the counter meds you might need - Tums, Tylenol, etc.

Umbrella and money !!

Have fun