I must be missing some thing here, not showing any Buick car show this year, all the ones I read were from years ago.
Someplace called "Bowling Green Alley", I think. http://www.gsnationals.com I think it's new. I might as well give it a shot and see if it's any good...
Well there's this one...........https://carshowradar.com/shows/il/buick-club-of-america-national-meet/
I think you are wondering why no one posts there??? "From Lockheed Martin to Ripken Stadium. Please join us on Sat, April 23rd from 12-4 as we host our 6th annual car show, benefiting the kids at The Johns Hopkins" - https://www.facebook.com/events/393591689068379/ Most folks I know around here use facebook to find events. Buick only? Cecil county at the east coast drags, Sept 24.