In this close-up shot, it's easier to see what they're all holding: Strips of photos taken at the titular Photobooth with all of them in each shot mugging for the camera and just acting in general very silly. The text in the upper right got cut off a bit in this image, but it's evident that these photos were taken not for an "Offworld Visa" or a passport, but for the last category, "Just plain fun!"