Last year, when the Pirates didn’t schedule an afternoon game on getaway day in Pittsburgh when the Cubs played there in September, the Cubs received permission from the city of Chicago to play a Friday night home game at Wrigley Field against the Brewers.
At the time, it was stated this would be a “one-time exception.”
Personally, I thought that statement was nonsensical, especially since the Cubs had three Friday night concerts at Wrigley Field in 2017. The reason the prohibition on Friday night games was instituted in the first place was, supposedly, loss of business by restaurants in the area.