Avenged Sevenfold bassist Johnny Christ spoke in an interview with Southeast Wreck Metal and explained what they learned from Metallica, when touring with them. He said:
“Before we finished ‘The Stage’, we were opening an American football stadium in Minnesota, for the Minnesota Vikings, with METALLICA, and the bill did really well.
It was us, METALLICA and VOLBEAT, and Lars [Ulrich] hit us up afterward through management, hit up [M. Shadows], and they were talking, going back and forth and talking about [how] it did so well and they had so much fun with the show, they wanted to take that show across the States and into Canada a little bit.
Obviously, it took us about three seconds to say yes, because if you get one of the legendary bands like METALLICA, you don’t really pass it up. We’ve learned so much just from being around those guys.
They’ve taken us out in the past, and we learned so much from them that we wanted to go out there and do that tour with them. We had an absolute blast with them all summer long. It was a lot of fun.“
You can watch the entire interview from below.