Just need to point out: A cruise is a ^%$^#$ expensive vacation. For me, part of vacation is focusing on the moment, place, and people that I'm with. Cruises have plenty of entertainment onboard, so if you feel the need to do something like this to save a buck, maybe take a deep breath and try to take advantage of what's already there for your entertainment.

If I ever take advantage of this hack... It'll be to download an extra book or two to my Kindle. My wife and I took a honeymoon in a remote area and mostly used our devices to take pictures and read books while at a beach.