So here's the deal. I've never been to a U2 concert, let alone a high-in-demand big name concert either. I'm assuming (and hoping) that they'll be coming to Winnipeg, so I wanna be prepared. I don't intend on getting a u2.com membership, so I won't be getting in on the pre-sales. So I have a few questions:

When do regular ol' tickets generally go on sale? Like, how many months/weeks in advance?

I read in previous posts that GA is the way to go; is it likely that there will be GA left for us regular folk? (I'd really be willing to pay almost anything for any seats though)

If I do get GA tickets, when do people start arriving at the venue? I don't reckon I'll have to camp out, but I want to be early enough to get a good place.

I hear shows like U2 sell out in minutes... I'm hoping to get my tickets from a Ticketmaster outlet nearby; is there a strategy for getting tickets, like going to a lesser-known outlet, or getting there hours ahead of time and whatnot?

So yeah... I'm a lil bit ignorant and sheltered in my concert-going life. Any help would be appreciated. :)