The Fall we <u>always</u> go up to West Point/Newburg NY area. Priceline the hotel & we have a *great* hotel (usually the Marriot) AND an indoor pool for $65/night. Please, if it has a pool the kids would be just as happy w/a hotel in Parsippany! LOL
Head out west 78 to Easton, PA (Crayola Factory) maybe stay while you're there.
Or continue into Allentown, PA for Seasame Place waterpark or Dorney Park and stay there.
If you're a camper on 78 are Round Valley & Spruce Run reserviors.
If you want to go into Poconos, rent a townhouse using cyberrental.com and stay in an all inclusive (meaning pool & lake & activities you can use on site)cheaper rates for Summer, when it's usually empty.