I have just given a couple of one-hour sessions to groups of Year 7 students at the next-door Middle School. I told them all about the recent training and gear and showed them some suitable pictures. They asked lots of questions and were great audiences. We also had a go trying on the clothing. Only at the very end of the last session did I get asked the question that I had been expecting: "How do you go to the toilet?"
I said little except to point out that we couldn't leave anything in Antarctica. They're expressions of horror were very gratifying.
Sometimes it is better not to give too much detail!