There was a promotion for a cruise while I was still schooling in University. It seemed like a good deal as it was only about $30 for a 2D1N cruise!
Esh, Bern, Em and I signed up for the cruise just for the heck of it. We had to take a ferry boat to the middle of nowhere before we disembarked on to a dock and transferred to the cruise ship.
The activities on the ship were minimal as it was targeted mainly at gamblers, but it was a cheap and good way to get away from the hustle and bustle of Singapore life and just eat and relax.