Slack, check out Hope Lake Lodge,...aka Greek Peak Ski Resort it's just down the road from my house. (stop by and I'll show you a Face Cord) !!!!!!
Year round activies, beautiful Resort, large Suites, Indoor Water Park, Alpine Slide, Zip Lines, Rope courses, Lake, on sight resturants as well as another great resturant, "The Gatherings" just down the road. Fingerlakes region close by with all kinds of activities, wine tours, boating, fishing, (Ithaca area Gorge walks, Water Falls, etc.)
Other family destinations Old Forge area (Adk Park) Enchanted Forest Water Safari, great Kids waterpark! Lots to do in Old Forge, Old Forge Hardware Store is a trip in it's self! Adirondak Musem in Blue Mtn. Lake is a short drive away.
Sea Breeze Amusement Park, older but fun park right on Lake Ontario.
Hope you find a great vacation.