Mods please delete if not appropriate

I’m chasing some advice on organising a gangbang for my wife. It is something we’ve discussed in the past and while she has said she is open to the idea she gets anxious around the organising side of it and looses the mood. What she’s told me is that she would like to try it but it would have to be arranged for her.

So my question to the community is does anyone have any advice on how to go about organising a group of guys (and maybe some girls) to have some fun with? How do I go about making sure everyone is going to be safe? Is it rude to ask for proof of being disease free? What about venues? Is booking a hotel room for a weekend the way to go or are there better options? What is the etiquette for groupsex? And most importantly how can I make sure that it’s an experience she enjoys?