Details. Luckily, Sam’s Club is here to help. The warehouse retailer’s Hogwarts Castle inflatable is absolutely magical and sure to be the envy of every Vernon and Petunia on Privet Drive.

But that’s just the start. Test your endurance on The Giant, a 900-foot-long inflatable obstacle course with 50 different challenges, or duke it out at Sport Slam, a bouncy arena packed with ...