Bounce Houses, Jumping Castles, and Bouncy Castle Rentals in Sumter County, SC. Also providing inflatable water slides, & party supplies for all types of occasions. Laugh n Leap of Sumter is a party rental company where we take care of all your frustrations. No need to leave your home , because we have a fully operational online booking system that allows busy people to rent a bouncy house from your computer or mobile device. Laugh n Leap is the best bounce house rental company in Sumter, SC.