Speaking realistically, if you're trying to appease someone by going, all I can suggest is take painkillers with you. I don't care much for metal anymore and I hold the corpse of Punk rock over it. All of the metal shows I've been to were full of guys acting pissed off and tough while raising their estrogen levels with massive quantities of alcohol. To be fair, the fat guys have a ton of muscle by natural standards without ever having to touch a weight..