Replying to Advice for "metal / hardrock" festival

Hello NS,
I am more of a moe. phish EDM festyhead guy but my girlfriend for the summer likes the hardrock metal scene. the two of us are going to see K-ROCK-ATHON which is headlined by SEETHER, A Day to Remember, Halestorm, All that Remains, Black Stone Cherry, Pop Evil. Now as seen recent threads I do EDM fests Dave and Phishtour so im not a rookie to "normal" festys

Because this is much different than Peace Pot and Plur or fear and loathing @CampBisco

I am just curious what to expect besides unruly drunk dudes trying to pick fights and mosh pits.