Thanks. My memory was probably spotty as I was 15 then....but I think the convention occured during the second half of the week. Perhaps a Friday and Sat trading hall trip is what I am remembering. Oddly I am in the picture on the cover of the Lion Roars featuring that convention...with my parents buying a Lionel 1990 1-700E Scale Hudson...
It was a great trip. Sadly my mother passed away of a rare disease PSP years later. So I am thankful this pic captured the essence of the trip.