We've been to Watkins Glen and Letchworth state parks and recommend both. Many wineries in that area, if you like that sort if thing. We really enjoyed the Corning Glass museum,too. If you haven't seen Niagara Falls, that's a must see! They claim that the Anchor Bar in Buffalo started the chicken wing craze. How about Buffalo wings in Buffalo?
Much to do, in that area, you'll wish you had allowed more time!
There are friends, there are family, and then there are friends that become family!