So basicly I have given permission to my other half to organize a train to be run on me.

It's been a fantasy of mine ever since a ex brought it up long time ago, but at the time I was really young and too scared of it. Over time it has still been a main fantasy of mine.

So a few nights ago I was talking about this with him, and I gave him permission to go about organizing it in the future. I can only assume it might be a birthday surprise.

We went over a little bit of details, as he asked questions, and I told him I would atleast like it to be a minimum of 5 to a max of 15. He pleaded with me to give him a actual number and all I responded with was surprise me. I know I want to be bound to the bed and blindfolded.

I'm clamped and love being filled so condoms will not be required.

Anyways to my question/advice needed is because he is organizing it all, what things should I make sure he is doing to ensure safety and proper vetting?