what can this Mom do?

I am the Mother of a 16 year old who wets the bed. We have tried everything we can think of to get things under control. Many of you must have tried the medications, alarms etc. We even tried acupuncture in an effort to help resolve the problems. Diapers are not a good option as he wears a back brace at noght and nothing can go under the brace. He has had many unrelated surgeries and has had so many other more life threatening battles that I have always just supported him in his request not to wear protective clothing at night. I am now thinking that maybe I have been unfair to him. Maybe I should have been more diligent about keeping him dryer in a pull-up or such. He is going away to a special camp for survivors of Open Heart surgery. He has gone for several years and they have always been supportive of his need for their help in washing sheets etc. This year they are asking that he wear some protection. He and I both understand their position, yet he was very upset at having to bring pull-ups to camp. He is thinking of missing his last year because of it. If any of you can give me some guidance as to how to help/support him I would be appreciative