Surely being on a craft in deep space is not that much different to being on a nuclear sub for months and months on end, smaller I guess.
https://en.m.wikipedia.org/wiki/Communication_with_submarine...
Obviously relationships will develop regardless, you put people together they are going to do stuff. It's just a another challenge, in my mind, rather than an advantage.
If not for the criminal record being a huge factor in job applications later, I'd consider low-security prison to be a pretty good way of getting a sabbatical. It's almost like basic income.
Reminds me of that time I remember from my childhood, when my dad had a friend in a hospital, and would go on ranting about how that friend has much worse food and entertainment than a typical prisoner...
Actully, now that I think better of it I wouldn't need a batteries included language; having so much time I could implement the "batteries" myself!