My son consistently wet the bed 2-3 nights (sometimes more) a week from age 5-7. Then it gradually reduced from 7-9 after we contacted the GP who referred us to our local enuresis team.
The enuresis team were fantastic. They gave us lots of advise, like limiting drinks after 5:30 (he had a bedtime then at 7:30) making sure he had water throughout the day and every hour (1 litre was his target). I ensured the school were on board with this too and the enuresis team sent a letter to them just to confirm it all and to to ensure his water bottle was readily available etc.
I soon noticed he wasn’t drinking enough in the day and after doing this, he did not need to drink too much after 5:30. We were also encouraged to make sure he used the toilet often during the day. Again the school were told this and he was going every hour.
We also advised an alarm which did work. It clipped to his pants and it did teach him to get up and go to the toilet as soon as he heard it go. It wasn’t cheap (if I remember it was about £80/90 from the ERIC website brand new) but it was also worth it.
We kept a diary which the enuresis team emailed which we used to monitor his wet and dry nights and rewarded him when he got up to use the alarm.
They encouraged us also to make sure son changed the bedding when there was accidents (with help of course).
The whole process was hard especially when the alarm would go off at 2am and then sometimes again in the night and the whole house had work and school the next day. Despite this we kept at it. Looking back now I don’t know how!
We decided to act from 7 as it was beginning to impact him. We noticed old smelly wet pjs were being hidden under mattresses, his confidence was going and he felt embarrassed. It was a hard time and we had to reassure him, letting him know it wasn’t his fault.
To start the enuresis team called weekly for check ins and monitoring. Then a year after we started the process as progress was being made and wetting had reduced from age 8 they checked in every 3 months. From 9, every 6 months. From 10 he was discharged and now at 11 we haven’t had a single accident in over a year.
Like you we had school residentials and cub and beaver camps so I was worried for him but his confidence grew after we started the process and all the teachers and leaders reassured him and us. We were told it’s very very common in boys and most times they just grow out of it.
Good luck! Wish you all the best in whatever you decide to do.