Celebration Kingdom, LLC, North Reading

At every birthday party, the celebrant is dubbed princess or knight of Celebration Kingdom, giving them reign for the day over a realm of fun activities. His or her Highness and their loyal subjects leap into the air inside the bounce castle or scramble up and down air-filled challenges in the obstacle course. In the dragon track, they hop onto scooters and try to outrace each other, before returning to a medieval-themed party room to dig into pizza and cake. Toddlers play safely in their own fenced-off area, so they can figure out their income tax rates in private. The Kingdom is also open for public play, during which parents recline on cozy couches and surf the free Wi-Fi.