This topic is about preparing for a colonoscopy and ensuring wafer security before undergoing ostomy reversal surgery. The person is feeling a bit anxious about managing leaks during the bowel prep process. Here are some helpful tips and insights shared by others who have been through similar experiences:

- The person has already purchased extra-long irrigation bags for the prep and plans to take an extra regular pouch and a full change kit to the hospital.

- It's recommended to stick with the application routine that you know works for you. Prep day is not the time to try something new.

- Most people have found that the wafer can stay in place during the colonoscopy. If you use a 2-piece system, you can remove the bag and attach a new one afterward. Even with a 1-piece system, the scope can often be threaded through the bag, though there was one instance where the bag/wafer was removed.

- For extra security, you might want to try this application sequence:
1. Use paste first to fill any crevices around the stoma.
2. Apply the barrier ring on top of the paste.
3. Attach the wafer/pouch and hold warm hands over it for several minutes to ensure it sticks well. A light dusting of stoma powder can also help.

- Large drainable pouches can make frequent emptying during prep easier. The hospital can provide these if you usually use closed bags. Stay near a toilet and empty as needed.

- Bring a spare pouching system to the procedure. The staff can replace the bag if necessary.

- Consider asking your surgeon if the colonoscopy can be done during the reversal operation itself to avoid a separate prep day. Some hospitals offer this option.

- Keep in mind that reversal outcomes can vary widely. Make sure you understand the potential risks and benefits by discussing them with your surgeon.