Who are all these bands? [with the exception of Sworn Enemy] Never heard of any of them...they sound like metalcore/hardcore/emo/screamo bands...

No idea, I just add what's remotely got to do with metal. If the bill carries one or two of the kind of bands that are featured on MA, that qualifies them for me to be here; after all their criteria for "metality" are far stricter than the ones of MS. Neuraxis for example are described as Technical Melodeath, Beneath The Massacre as Brutal Death and Suicide Silence as Technical Death/Grind. Even if it's a huge music festival with little to none metal, it still might be interesting for us metallians as long as there is at least one metal band. Check out the Donauinselfest in Vienna, Austria for example - of the loads of bands there, only 3 play metal. But considering the price, it still is interesting enough for metallians in that area.