I'll throw in the Mon Ami Winery hesitantly as well - the physical plant is beautiful, but over the years, the service quality has been a roller coaster, some visits good, some total disasters. Other reviewers seen to have had similar up and down experiences also. Read the reviews then decide for yourself - we haven't been back in several years since the last debacle.
www.shoresandislands.com is the major tourism bureau in the area - call them and see what they suggest!!
I second the Yacht Club. Beautiful setting, wonderful food.
Sawmill Creek is also an option in nearby Huron. That is where my grandparents had their 50th celebration a few years ago.
Can people still rent the ballroom at Cedar Point? GM, do you know?
Depending on how many people you expect and if you want something sit down, you could perhaps do one of the downtown restaurants. Crush, Mosley's, J Bistro, Zinc, etc. But if you want something more open house reception-like, Sawmill, Yacht Club, Bay Harbor Inn, or space at one of the local hotels.Edited: 17 July 2017, 20:25