Every time I have taken my kids to Gen Con we have started a new adventure.
I like to pull from the classics no matter what it is I am playing. So in the past we have done S4 The Lost Caverns of Tsojcanth and B2 Keep on the Borderlands.
This year it is going to be L1 The Secret of Bone Hill!
I am rather fond of this adventure and have figured out some new tweeks to it to make it work great in my kids' AD&D game. Plus I have a bunch of Len Lakofka's material from Dragon that I want to port into this.
Should be a blast!