I was at the vancouver 8-day one in '69, too. My mom's old cadillac was really struggling on the way back and we made a lot of stops for help. I don't think we had a sign in the window, but we did get help from both JWs and non.
I remember the nightmare lineups. Ran out of food. No bathrooms. I was a teenager with female issues and I recall having to put paper in all the windows of my mom's cadillac to take care of personal needs because the bathroom line up was miles long. Because my mom had four little ones, she didn't stay for the evening sessions. Some braniac scheduled the day's end so it conflicted with Vancouver's end of work day rush hour traffic. We sat in bumper-to-bumper traffic for some three hours. People were insanely angry at the JWs.