No don’t do it. A transatlantic voyage is going to be very different than a cruise to the Bahamas etc. Out in the big ocean you’ve got the potential, and most likely, huge swells and rough cold seas. You aren’t likely to be spending much time outside and better hope you don’t easily become seasick lol. I was in the navy and have made several trips across the ocean, it’s not that fun. Yes you can have nice smooth seas but it’s not likely and it’s definitely going to be cold/cool depending on the route taken. I’d rather fly to Europe and do a nice Mediterranean cruise instead.