The Duluth, MN drive through had a wait time of 15 minutes, which is too ne expected. But when I pulled up to order there was a sign saying they were not open today, so I just sat in the drive through line for 15 minutes for nothing. There should've been a sign posted prior to the ordering spot. I don't know why the line was 15 minutes long if they were closed, maybe people didn't read or see the sign, but that then caused me to waste my own time. Also, why was culvers closed at 7pm on a Wednesday?