Monday and Wednesday are the 15th and 17th next year. Also, the days for the past few years have been:
Thu/Sat
Tue/Thu
Tue/Thu
Mon/Wed (this year)
So they may return to Tue/Thu (June 16th and 18th) next year, with, as you say Juneteenth not falling until Friday. All guesses, of course...
I stand corrected. But it’s unlikely they’ll host the event at the same time as Grad Night (again, attendance takes a hit from more profitable non-MK when the parks close early) and even less likely it’ll be on a Saturday again. Especially when neither night sold out and reports are that attendance was lower than in years past.
I’ll stick with my prediction - M/W the week following Grad Nites, as people will be coming into town Thursday for a long weekend.