Maybe if they get a "Tender" that is in fact a more traditionnal cruise ship (Albeit a small one), with masseuses, alcohol, pools and the like, and stuff the wives and kids on that.
Then you can have the sub meet that boat in a pretty tropical cove somewhere, have a beach party or whatever. Or switch the crews from sub to ship after a few days... The possibillities are endless.
Of course, that would have a couple millions to the required investments, but hey!
