LB -while it may be okay to pass a place where there are untzniusly dressed women in order to get to work, this sounds like a different type of situation to me.
1. They are not just passing a place where there is pritzus; they are working in a place of pritzus.
2. More importantly, they aren’t just working there; they are creating the place and encouraging others to be there. They are the ones who are making the “kosher cruise” for other Jews.
I and “dan l’kaf zchus” that they must have asked a sheilah. I am just wondering how this works and why it’s okay. Even if it weren’t assur to be judgmental, I certainly don’t know enough to have an opinion on it. I just am curious as to how it works.
I was surprised that there is a hashgacha because it sounds like they are encouraging others to sin. But maybe the reason for it is that they assume that most of these people would be going on the cruise anyhow, so it’s better that it be kosher and have kosher entertainment, and that it is why it is muttar for the musicians and masgichim to be there. In terms of themselves, it is parnassah as you said, and in terms of inciting others, they are actually preventing them from doing worse things.
Also, I think that CT Lawyer said that cruises used to be different, so it’s possible that these things started when they weren’t a problem, and it just takes the oilam a while to realize that things have changed.