I don't believe anyone who has read your stories is bored. It was very interesting and your wife made both you and Mr John happy. I can't see anything wrong with this.
In the past we've teased old men and commented later that they probably haven't seen or touched a naked women for many years. In fact some never have. In the past many people even had sex in their bedrooms in the dark or at least under covers and dressed. We know some like that.
Just don't pressure your wife and I'll bet someday she will talk about that day again. Also bet something similar will happen again. Hopefully you can get her to dress/ undress someplace else in public and tease both you and a few strangers. It does not have to involve touching to be exciting.
The part that amazes us is the amount both you and your wife drank. Two mixed drinks and my wife or I would have fallen in the pool and drowned. We love to play our games sober but my wife has pretended to be slightly drunk to make things exciting. Again, great story.
We'll be waiting for the next one.
We would have gotten rid of the film also. After all, where would you get it developed now days and who would you want to see those pictures? Well maybe us!
Could you see Mr John taking those films to the local drug store when he picks up his meds?