The last seder I was at was, hmm, 12 years ago? I think, something like that.
I am the youngest and the next generation wasn't quite up to speed yet (and my husband, who is younger than me, doesn't read Hebrew) so, at age 31, I was doing the 4 Questions.
And then of course I answered myself.
The thing I've always liked about seders is that everyone participates in some fashion. It's usually with reading, but also with cooking or just asking what things are and explaining them. And that's essentially what the meal is all about. A child or a layperson asks what's going on, and the family responds. The matzoh means this. The bitter herbs mean that. etc. Everyone gets a piece of the action.
I also recall, at age 14, a seder where my uncle (now deceased) brought slivovitz and fresh horseradish root. They both take the eye makeup right off ya.