I have been there with my friends to visit Lumbini Park as we heard that park is very good. But when entered we feel that park is not for us. If you have kids then this park will be very good. Best time to visit this park is on evening. The main attraction is High Speed Boat and Laser show. Our Driver (local) warned us to board those high speed boats as they are so risky at evening time, and frequent accidents happen over there. Lake is so dirty. However you may ride Large Boats to visit the place for Laser show with sound. If you already visited smiler place with laser show then you may feel bore.