I could use some guidance and counsel on fulfilling a 35 yr fantasy

35 yrs ago - 23 yrs old - i stopped at the grocery store late one evening on the way home. I was minding my own business when this old woman (she was at least 35) asked me a question about something. Now, for an old woman she was kinda hot with ample beasts. She comes back 5 min later and asks - " will you go home with me?"  I was shocked and confused and stammered something like - "that's very nice but I'm running late"   She smiles and walks away - and 5 min later comes back with a very explicit and direct offer for an encounter in her car.  I am red faced, disoriented, nervous - and turn her down again.    

And I have been fantasizing ever since about the range of crazy things that could have happened that night.

So, I would welcome any suggestions on how to live out this fantasy.
I am a very experienced hobbyist, with solid references, etc. and I appreciate that this is way outside the norm.
I am sure I could convince one of my regulars would play along - but that would kill the element of surprise  

I want to be approached in a store by someone I don't know - maybe not even know exactly when. Followed by - well - whatever - and I don't want to have a plan or know the plan. Maybe it is just a short parking lot encounter - or 60 min vanilla hotel affair or a wild, kinky unpredictable overnight.

I am not a cheapskate - I am more than  willing to compensate someone for making and managing the complex arrangements. And  maybe I would want to do this multiple times - perhaps other cities, other scenarios - airports, bars, office.  It gets pretty interesting when I begin to imagine the possibilities.

Sorry for the long post.  

Thank you for any suggestions and guidance