I believe I missed one since getting back into trad - that's nine out of ten and its 6 hours drive with no way around the windy city trafic. Well worth the time. One year I did not buy a bow. Have met so many fine folks there and its a great chance to shoot the bows of some of the finist bowyers. You know the saying - So Many Bows, So Little Time! - well this is the place. Some of the bowyers that are there every time: Ron LeClair - Shrew, Ron King - Fox, Bob Morrison, Jim Reynolds - Thunderstick, the gang from Black Widow, and many more. Good demos, lots of supply vendors, two shooting ranges.
In short, it is one of the traditions of traditional archery. Make it if you can.