Saw loads of shows as a kid in Seattle in the 70s but only in the past few years have I seen some of my all-time faves like Judas Priest, Motley Crue, Disturbed, Alice Cooper, Godsmack, etc.,some for their "farewell" shows. Ok, I saw KISS, too, but that was purely for the live experience (not on my top 100 playlist), which was pretty damn amazing even if Crue did blow them off the stage.
Worse than your expenditure for tickets I bought the insanely priced tour shirts. Stay away from the costly swag and have fun!