Whole foods has some in glass bottles. don't remember the exact brand, but they also make a great chocolate milk. they were located right next to each other. It was outstanding. No Booze, but i like to add my own anyway.
Kleinpeters is my favorite and a friend of mine works at the dairy. He mixes the eggnog with Kleinpeter chocolate milk. I do this and can have one glass only since it is so rich but man it's good. Try it. I don't like booze in my eggnog.