Husband wanting to go to Vegas with his friend

My husband and I are both 27. My husband's friends group is having a guys trip and going to Vegas and they invited my husband. My husband was telling me about it. My husband has had the same friends group since 8th grade. Now I do trust my husband. He will drink but doesn't like to get drunk and has always been mature. Since he was 11 every adult in his life said he was an old soul. He's the dad of the group. His friend said in college he would go from 18 to 40 real quick. He's basically his friends parent therapist, and wingman. He makes sure one of his friends isn't picking a fight with a guy twice his size, his other friend isn't sending a dick pic to his ex while drunk crying over her, his other friend isn't driving home drunk, and that if another friend decides tonight is the night he experiments with his sexuality he's not leaving the club

Honestly that's one reason I love my husband is because he takes care of people. He can go out clubbing with his friends and not get wasted and makes sure everyone is okay.

But he's also never been to Vegas before except like once for his brothers bachelor party when he was 17. It didn't bother me too much until one of my friends told me married people don't go to Vegas and that my husband could be tempted. I've always said that if my husband could be tempted to leave me by some woman shaking her ass at him then I don't want him. But I also don't think he would cheat. He's already made plans of going but now my friends are making me insecure about it.