Don't know Ms. Stella in Amsterdam and don't expect to be in that part of the world.. But your post is very hot because it involves unrehearsed and unexpected interaction, which made the Ladies hot and happy.

In the beginning of my bdsm adventures, I was solicited many times to participate interactively, and while I constantly declined to do so, the Mistress(es) involved correctly sensed that I would eventually relent.

I have been in Amsterdam a few times. I did not like the scene there and never played there.