Sorry to hear that the TT continues and your pain keeps getting refreshed.
I still think you are eventually gonna find out their trysts were sexual in the park.
That message you saw from him whining about how now they were not gonna be able to explore the physical side of things isn't conclusive to me they had done nothing to that point, especially now you know about the planned overnight.
There are a lot of things they probably couldn't try in their afternoon quickies in public places, and they were saving those for the hotel or another opportunity to be alone in private.
It could be the loss of those plans he's crying about.
If the TT didn't just keep coming at you in waves here, I might be inclined to say your WW was telling the truth about there being no sex during their park adventures.
But the fact that she is still hiding things and only revealing when you or OMW finds incontrovertible proof of the lies, tells me that their is still more to come and this is unfortunately probably one of the next discoveries you are going to make,