My vote is stay home. You are not going to get what you are looking for at the opening of an art exhibit.
I went to the same church as my first T and it did help me to see that she wasn't faking in therapy. She truly was a caring supportive person... But I had the belief going into therapy that Ts were some kind of big brain sucking zombie.
With another T I went to a conference and bumped into her once. We said hi and hugged and went our ways but we were both attending as professionals. Later in our work I went to her house to pick something up and met her husband. She was OK but after I got there I realized just how not OK I was with it. Now that we no longer work together I deeply regret the decision to go to her house.
I ran into another T I was working with. She had her young daughter with her and she was such a cold distant mother I burst into tears. She was so warm with me in therapy but so cold to her own kid. I couldn't work with her after that.
My current T I knew from a previous context that included a couple of social gatherings. I am grateful for having had the experiences but they make therapy harder. I did find she is much more fun as a T than at an event.
So while it is exciting to dream about seeing T outside of therapy I have mostly found it to be damaging to the relationship and disappointing. Ts are much more fun as "super heroes" than as real people. They are far more normal and boring than we give them credit for.