Yep, if you are able to; it's a great cheap vacation but more important, you can actually see, all the jobs you are interested in - in action! Watch the cruise staff activites, shore excursions, photogs, shoppies, casino, pursers/front desk, youth staff, musicians, dancers/singers, bands....
Check out the gig, if you can talk to them about work/life onboard. Ships leave from dozens of ports around the US, Canada, Australia, Europe. Check portsandbows.com or cruisecritic.com and check out the various cruise home ports.
Check out some crew ship crew websites and ask questions: www.crewbar.net, www.shipblogger.com, go to Youtube and search "cruise ship crew cabins" and "life onboard a cruise ship".
