I don't think Rock will get booed especially considering he announced his appearance well before the ticket sales started so its probably going to draw a different audience than your average one. I could see some hardcore Punk supporters at the event but nothing major. It really depends on the crowd too though especially if its the same crowd as it was at the MITB PPV. Punk got a pretty good ovation that night. One thing is likely and that's a hot atmosphere.
Someone just tweeted Rock this pic.
Dwayne Johnson @TheRock
@ericakerwin Classic! Love my Canadian peeps. #KnowYourRole
Lol, I go to uni in Hamilton, ON and I've never seen this shit before, pretty sweet. I bet it was someone who was there at Breakdown 98 when he got that SICK ovation. #RockCity