I'd second Wesley's remarks. In my experience (and I work professionally as a storyteller with all kinds of groups, as well as having run storytelling workshops for all kinds of groups - including prisoners in Dartmoor) adults love all kinds of stories, just as children do. All you have to do is to keep looking at your audience, to remind you that they're adults and can enjoy the story on different levels, and then just go ahead and tell the stories you love best.

Anne