Event type: Birthday party. Indoors or outdoors: Outdoors. Balloon art type: Simple balloon twisting (e.g. 1-balloon dog): No, Detailed balloon art (uses several balloons): Yes, Decorative balloon sculpture: No, Balloon arch: No, Balloon centerpieces: No. Number of guests: 10-20. Age of guests: Younger than 4, 4-6 years old, 6-10 years old. More info: It is a birthday party with 20 kids or so.