My boyfriend and I are heading to Aruba in a few weeks, we cannot wait!

We are NOT party animals. But we do want to do fun things on the island. We'd love to go on a cruise, but we're not sure if we should opt for the party cruise or the dinner/dance cruise.
I can imagine the party boat is self explanatory - a PARTY. Is it full of young people? Does it get rowdy?
The dinner/dance cruise seems more mellow and "elegant."
Have any of you been on either? Please describe your experience. Thank you!
(The link for tattoo party cruises is
http://www.arubaadventures.com/tattoo/)