Las Vegas first time for a couple

My partner (43m) and I (33m) are going to Las Vegas in a few weeks and are curious about visiting a bathhouse together for the first time. Up until this point in our relationship we’ve been monogamous and likely will continue to be outside of one off experiences like this but we’ve been talking a lot lately about opening things up on a case by case basis when a unique opportunity presents itself. I’ve never been to a bathhouse ever and my partner has only been once about 10 years ago when he was on vacation in Europe so this will be a fairly new experience for both of us. I’m curious if Adonis or Entourage would be a better choice for our first time and if anyone in this group has any tips or other suggestions?