These look to be much bigger venues than previous years - I know the Molson Canadian Amphitheatre in Toronto holds 16000 people. Iron Maiden played there last year and Mayhem fest is booked there this year but it seems a bit large for Megadeth.
Are any of these bands really that big?
04/05 - Kataklysm, Aborted
04/08 - Carcass, Gorguts, TBDM
04/23 - Behemoth
04/24 - Nile