Conversation so far:
When was Hail to the King released?
The album, entitled Hail to the King, was released on August 27, 2013.
How did Hail to the King do on the charts?
Hail to the King charted as No.
1 on the US Billboard 200, the UK albums chart, as well as the Finnish.
How many copies did Hail to the King sell?
CANNOTANSWER.
Did the band do any live shows to promote Hail to the King?
The band headlined Monster Energy's Welcome to Rockville two-day music festival in Jacksonville, FL, April 26-27, 2014.

Question: What other bands played at Welcome to Rockville?
Self-contained rewrite: What bands played at Welcome to Rockville in addition to Avenged Sevenfold?