We were on the Magic for 20 nights last summer on a B2B and my DS7 (now 8) was in the kids club every single day. The open houses and adult-only hours did not affect us in the least. There was always a club open for him and he always found something to do and someone to play with. There was an amazing variety of activities for him to enjoy from hands-on crafts to movement activities, science and cooking projects, computers, art, plus just general free play with the friends he made or a movie to watch. We had been on cruises before (when he was 3 and 6), but this was the first time he was comfortable going into the club alone, which was actually a shock to us as he has ASD and a language disorder and didn't think he would go in at all. On our first day he went in, I checked on him after an hour and he basically kicked me out and that was the end of that! Prior to the B2B's, the only time he would go into the club was when an adult from our party was with him. I hope those on here who are complaining about open houses will understand that there are many children of all ages who vacation on
DCL who for, whatever reason - are shy, have a disability, etc. - cannot go into the clubs without some extra support from an adult in their vacationing party (as DCL does not offer individualized support in the kids clubs). DCL is not creating these open houses to be an inconvenience to you. DCL is offering them, IMHO, at least in part, to accommodate those children who could not enjoy these spaces otherwise.
My suggestion to DCL would be to have some CM's who are trained to work with children with developmental disabilities (1 in 7 children in the US have developmental disabilities - that's 15% of all kids in the US!) and offer smaller group options (1 CM to 4 kids and even 1-to-1 supervision) for children who need it. You could offer this at an additional cost, like you do with the nursery and parents could sign up for it prior to the cruise (like we do with other cruise activities). I know firsthand of SO many families with ASD and ADHD children who desperately want to go on vacations , but need extra support on the trips. These families would happily pay Disney for this service!