Be sure to stop by the state park if time permits for you. It is a highly trafficked state park so if a tranquil time is what you crave, I would go very early. Spectacular waterfalls and pretty easy hike (waterfalls do make for wet walkways so be careful).
Be sure to check out the mentioned website if you're coming prior to the wedding date. I found three different trolley tours scheduled for September 28th. I have not used this service before but thought it might be helpful for those looking to adventure into Finger lakes. Ticket prices seem to be $45. I am including a screenshot of a particular trolley schedule to provide context.
Anthony and I love this BBQ restaurant. I believe there can be quite a bit of a wait on weekends, so go early if you can.
The best seafood I have had in a while. Anthony and I went the day after their season started and everything was 11/10. They also tend to have a bit of a wait in season. I would try to call for a reservation if you can.