The topic at hand is about the experience of taking a hot-air balloon ride when you have an ostomy, and whether the change in altitude might cause any issues with your ostomy pouch, such as expansion or leakage.

Here are some helpful insights and advice from others who have been in similar situations:

1. One person with an ostomy shared their experience of riding in a hot-air balloon up to 4,000 feet and flying in a small non-pressurized plane at altitudes between 5,000 and 7,000 feet. They reported no problems with their pouch—no ballooning, leakage, or discomfort.

2. Another member pointed out that while sealed snack bags can puff up when moved from lower to higher elevations, this is due to gas expansion. However, the community's experience suggests that the change in volume at typical hot-air balloon ride heights is usually not enough to cause issues with an ostomy pouch.

3. As a practical tip, if you decide to go on a balloon ride, it might be comforting to bring your usual spare supplies just in case. However, most people with ostomies find that they can handle the altitude change without needing any special preparations.