For my mother's 80th birthday in Sept. I'm organizing a lunch for about 50 people on Long Island. We may have a few kids but mostly adults from early 20s on. We want good food but it doesn't have to be great. A private room is nice but not necessary. Would like to pay about $40 per person. Most important things are great service and the right location -- something near the water or in a nice downtown area near a park. or village where we can stroll around. Huntington area is where she's based. Thanks.