I miss the bars a little (I wasn't too much for going out), but the current 6 pm curfew is rather annoying, how I can't do anything after work. Of course I adjusted my habits, going shopping or running during lunch breaks or the week end, but still
Though you're right grocery shopping is a pain.
And if they're actually going to a bar instead, then just close the bar at 6pm. A general curfew seems like a chainsaw approach, instead of a scalpel.