Charlie and Lisa Williams never cared for opening a storefront. Then their main competitor went out of business.

A teacher describes a giant balloon arch she’d bought for a school event. At Party City in Maryland, cashier Christina Marin remembers the first time someone gave her sealed results of an ultrasound ...

The balloons, wigs and costumes are fun to buy in person, which shielded Party City from online competition for a long time. For years, its stores would install a Halloween picture wall ...