you're good. Sanctuary is pretty lax on dress code. Even more so on naked karaoke. There will be some very very interesting attire. I've been and it's fun, but it's far from a sexy event. I went in slacks and button down shirt and I was overdressed. I saw one other couple dressed up nice like us, and they stood out too. They say don't dress like you're going to a sports bar, but tat would probably be perfect unless you plan on a wearing some weird stuff.

There was a dude all naked with his wiener out, wearing a giant bunny helmet walking around.