So you’re in town for Jazz Fest and want to spend every waking moment seeing live music? Hell, that’s easy. What we’re offering here is a timetable for the truly intrepid, those who prefer not to sleep at all. Is it possible to go 24/7, and literally rock around the clock?

The day we’ve picked for our 24-hour challenge is the Wednesday between Fest weekends—the day when some Fest-goers prefer to take a rest, is also one...