Can i get a temporary plan? Or should i just relax and not surf the net?

Where are you going? Verizon only works in the US - there's no service outside the USA and a very few other countries. Most cruise ships these days have WiFi, too.

Tim

Google is your friend:
Cruise Ship Coverage

However, I'd just advise putting the device away and enjoying the cruise. Expect to pay a lot if you have to use it.

The constitution needs updating to Life, Liberty and adequate bandwidth........