I can't answer all the questions here, but...
They're usually okay about people moving around, I've honestly never had anyone check my ticket once I was in the section, and if you look like you know where you're going, the ushers won't bother you. If a section is completely empty, you would probably be advised to stay clear (they try to sell in sections so they can get better cutaways for TV), but you MOST LIKELY wouldn't get kicked out of the stadium for that, just asked to move back to your seat.
The best (only, really) station to listen to is am 590, and the time of the pre-game really depends on what else might be going on (at least there won't be too much hockey garbage by next week, one would hope...)
I'll leave the rest of the questions to those who would know more specifics than I.