Dose of tough love here:
I can't even believe OP made a post about this.
I would gladly PAY/LOSE $1200 to avoid the awkwardness and humiliation of being dragged on a cruise with an ex that dumped me and to make it worse, LJBF'd me months earlier. This OP is almost too surreal to be real, but every year a couple of these, "My ex and I are going on vacation together, bla bla bla" cringe-worthy posts pop up.
Damn, it's probably my genetic make-up and DNA but NO WAY in F*UCK would I go. My dignity, pride, self esteem, and self worth are worth A LOT more than $1200 or $1600 or whatever. Money lost and lesson learned and the dumb b*itch NEVER hears from me again. Period. End of story.
I can't even begin to count how many negative scenarios OP will encounter on this trip. A week's worth of awkwardness, measuring words, side-stepping issues, dealing with an ex--AND her family, etc, etc. Better hope no one from China, S Korea and now Italy board that boat coughing too.
And all you guys who are saying, "Yeah, but he'll probably get some p*ussy are part of the problem--because you're acting like slaves to the p*ussy, like it's the be all end all. This just in...IT's NOT
I am honestly blown away that "men" act like this and would even entertain the idea of going on a cruise under these circumstances. But, that's just me.