I would suggest the unknown cover is Riff Raff, and where you've got Riff Raff they actually did Whole Lotta Rosie. Both AC/DC covers, obviously.
Good to see yet another person actually able to watch a GN'R show for the great show it is.
30/7 King Diamond
1-2/8 BiesenRock Festival
3/8 Lokerse Festival
16/9 Richie Kotzen