Yes, you are generally allowed to take bubble wands into Disney On Ice performances, and in fact, the show's vendors sell themed bubble wands at a significant premium throughout the arena. These glowing, rotating wands are a staple of the experience for children. However, there are a few caveats for parents bringing their own. First, while the wands themselves are allowed, security at many arenas may ask you to ensure the bubble solution is in a sealed, leak-proof container during entry to prevent spills. Second, once the show starts, you should be mindful of the guests sitting around and behind you. Large amounts of bubbles can sometimes obstruct views or create a slippery floor in the seating area. If you bring a wand from a previous Disney vacation, ensure the batteries are fresh, as "dead" wands are a common source of mid-show disappointment. While the performers often use their own high-powered bubble machines, your child's personal wand is a welcome part of the "magic" that Disney On Ice encourages.