We have a group that meets every month or two. There are three consecutive meetings (three nights one after another) of meetings for Autistic spectrum, Down syndrome and multiple disabilities. I go to the multiple disabilities one. My daughter doesn't have a diagnosis, same as several other families there.
It's nice, but I don't *absolutely love* it. There are louder members that don't really let the quieter members talk. The mentality there is that you should send the kid away to camp, a respite program for the weekend, etc. One mother there doesn't feel like leaving her daughter to strangers all the time. Her 5 year old gets physically ill if she is separated from her mother. The other mothers all tell her that it's so important to take a break... she really should send her out. And I feel bad, so I try to support her. I think she is totally correct about that. But every time I pipe up, the loud members are louder than me and no one hears. So it's mixed for me. I do gain strength from the meetings and glean info... enjoy a night out. I'd say you should try to go, and if it turns out not so well, you don't have to commit.