To do in NYC
Theater
To book a broadway and off-broadway show - todaytix.com usually has some good deals.
NYC Pride
June 25 is NYC Pride. Sunday Worship at Trinity Lutheran Church of Manhattan is at 11:00AM. Father Andrew Cain, our Priest from London will be preaching. NYC Pride Parade is in the afternoon. You may check nycpride.org for details and other related events.
Central Park
The church is few meters from the Central Park, you may explore it before or after the wedding.
River Cruise
For River cruise on the Hudson River and East River (we did this on the night of our civil wedding), you may check https://www.cityexperiences.com/new-york/city-cruises/bateaux-dinner-cruise/ or circleline.com. You may take the free Staten Island Ferry ride to get a good view of the Statue of Liberty but should you want to go to the Ellis island, you may check the reasonably priced tours through circleline.com.
Exploring NYC
For all the other events and things to do during your visit to the Big Apple, you may check https://www.timeout.com/newyork.