I wasn't attending, but when I heard that Jamiroquai won't perform (due to the singer spraining an ankle) and then the second day was canceled altogether, I felt bad for the people that went. I've had my share of canceled concerts and festivals, the overpriced Sonisphere in particular. So I'm happy you had a good time after all :)
And if you have difficulties ordering hot dogs again, try asking for a кренвиршка (kren-vir-shka, stress on the E) - it's quite similar a snack, if not identical, depending on the particular bakery or stall, so both words usually mean the same thing.