Risto's Restaurant & Cafe is a great place to begin your trip. They serve a range of cuisine, in a relaxed setting. There's a children's menu and it's really family-friendly.
Tilyar Lake is a serene lake with a beautiful garden surrounding it. It's perfect for walks, boating and picnicking. There are also some small food stalls and a playground for children.
The Kingdom of Dreams is India's first live entertainment, leisure destination. There are various activities for families, live shows to watch, and great dining options. It's a great way to end your trip.
If you have more time, you can visit a nearby amusement park, Oysters Beach, on Day 1 or visit the town of Rohtak. If you have less time, consider skipping Tilyar Lake or visiting a local market.