I don't think DH is especially controlling, I hope DC won't see it that way - we both accepted their gender identity, getting a tattoo on their 18th birthday, we never really set a curfew because TBH they generally liked getting to bed early and they were always shy of going to over 18 venues before they turned that age and so on and now they are 18 I think they're old enough not to have one.
I'm fine and very happy they are independent - especially in an age when so many parents are worried about their kids 'launching' into life and not having a social life. It's a good 'problem' to have, but I just don't want to feel we always have to 'book' them months in advance because there is always something happening and I feel they do need to recognise that, a few times a year, family stuff should take precedence. I'd rather they see that on their own, but it may be they need some explaining that it can seem hurtful if they say they'll do a family thing and then some non-essential thing comes up and they go 'Actually I'm doing this', like happened when DH and I had a combined birthday party last year.
I know a room full of strangers is not their idea of fun, but I'd have liked them to swing by, even for just half an hour, and they made a decision on the day to do something else instead. I wasn't devastated or angry, I just hoped they might choose to share in our lives in that way, IYSWIM.