What’s a party decoration company to do when big parties are verboten? Take it outside, says Mari Salas of Pretty Balloons AZ. Salas and her mother, Maribel Cardozo, are originally from Venezuela and started their entertainment company last year in Tampa, Florida. After moving to Mesa and rebranding as Pretty Balloons AZ, they started doing balloon twisting in restaurants and creating elaborate party decorations, from balloon versions of Disney princesses to helium-filled aquatic scenes. “We...