Can't use bus for events on a Saturday evening
Buses end early enough on Saturday evenings that you can't use it for a concert or event.
I've gone to events on a Saturday in Grand Rapids and had to leave early in order to catch the last bus home for the evening. If I want to use public transportation for a weekend evening event, it has to be on a Friday, since the hours are longer on weekdays. If I want to go to an evening service at my church, I also can't take the bus for that, since the last one leaves too early on Sundays.