Lined up this morning at about 7:30. By the time I got off the ride it was about 8:20. So to wait in the actual line I'd say I waited 20-25 mins. Not bad at all. When I got out the wait time said 90 mins, then went back to Diagon a little later on around 10ish and it was at 165 mins.
The ride was good, not great. Not something I would wanna wait an hour plus for. I'll have to see tomorrow when I ride it again to see. I see you guys mentioning water so wherever it came it didn't work today. But the rest of the ride was smooth, no breakdowns.