I've never met a match here to my surprise despite this being a cruise website. I did meet cruisemates on other dating sites where I advertised for a cruisemate. The people I met werre cruise veterans compared to me who is newbie. (This was a regular dating site, not for cruisemates)
I got along great with my cruisemates. I'm neat, polite and considerate and so were the people I met. So no problems. Sometimes we did things together and sometimes we gave each other space. I would say 80% of the tme we hung out. I'm a SBM both my roomies were SWF's. Not what I expected for roommates, but saving money is saving money.
My advice would be to talk on the phone and get to know each other. Both times the people I met were from another state and the first time we physically met was the first day of the cruise. We exchanged pics and spoke on the phone 6 or 7 times over a 3 week period getting to know one another. That made things so much easier.