Do you have a staff blogger to research for you?  Perhaps a sister with a good memory?  Krokus opened for Def Leppard.  I don't know who Jon Butcher Axis is.  I remember buying our union jack t-shirts there and slipping them on over whatever we were wearing.  I was in 6th grade!  That was the year I became JennIE.  :)  Also worth mentioning, it was before Rick Allen's accident.  

(Barracuda was out in 1977, so you were probably 7.)  I remember that ride and the Carnival and wondering how the people didn't fall out.  Crazy ride!