Our DS was 11 on our cruise in Feb. He went to the club alot. We looked over the activities that there were and highlighted the ones that interested him. Then we looked at our excursions and other things that we wanted to do together and picked out times he would be able to go to the clubs.
He spent time with us and time doing things he enjoyed in the clubs. He really liked some of the late night activities--like getting the pool to themselves and the pizza, using the basketball court without the bigger teens around. He made several friends and they could sign out and go up to arcade, to deck 9, walk around (he had to let the counselors know where they were going).
For him the clubs were a good thing, especially on the days at sea. He is not a "sit still" kind of guy, so liked being busy and having options of things to do.
Every kid is different. Look over the kids navigator and see what there might be that interests him. Also important is parents' attitude about the clubs. If parents have a positive attitude, then kids probably will too!
We also enjoyed our time together at the ports. Key West did not interest him very much, so he was glad to get back on the boat. He really liked GC and Cozumel and of course,
Castaway Cay can't be beat--we would have liked more time there! He ate with us most nights (we had late seating) and our servers were really great with him! We went to the shows and other predinner entertainment, had our pictures taken, went to the character breakfast, and took part in the activities on deck 9--sailing parties etc. He and his dad played table tennis and shot baskets; he and I always did our nightly walk around deck 4.
We have to laugh that sometimes he would get in later than we would from the nights' activities in the lab.
So, I think that your son will enjoy it.