Eternal - The general advice for any party is to not go in with any expectations. I mean, you can plan on playing with each other if they have rooms to play in, but that's about it. I'm not familiar with the venue you mentioned so can't really speak to it or have any idea of opportunities.
As I remember, other than from the casinos in towards the boardwalk, Atlantic City was kind of a shit hole. Has that changed? Are there other OK parts of AC?
IMHO, I see the "My husband is not quite ready to see a man and myself interact. " statement in your base post as a yellow flag. You're starting at a point where it's OK for him to play with other girls, but not for you to play with other guys.
For now, you're both excited about the possibility of playing with another girl, but my "sense of fairness" alarm is going off as to his motivations for getting into the LS. It may be fine, but this sounds like something that needs to be discussed in detail, if it hasn't already.

