View this page for Delaware family vacation ideas including things to do with kids, and family-frienldy hotels with seasonal vacation offers. Create a city adventure in Wilmington or rent a beach house on Bethany Beach, Dewey Beach, and Rehoboth Beach. Best places for family vacation fun: Brandywine Park Zoo, Air Mobility Command Museum, Winterthur Museum, and Killen’s Pond Water Park. Enjoy Longwood Gardens and the Hagley Museum; have an outlet shopping adventure and ride a carousel. Go swimming, fishing, surfing, and sailing. Don't miss whale watching.