iPhone 3G... days away

So I've been obsessing over the new iPhone 3G, reading as much as I can from every internet source I can find. I'm still trying to figure out several key issues:

• Do I really want to spend $15 more a month so I can get work email? (...right now, I'm thinking only if I get reimbursed for the costs.)
• Can I get a family plan with the new iPhone 3G and say, a Blackberry Curve? (...becoming a family, in more ways than one is important you know!)
• Where should I get my new iPhone 3G, an Apple or AT&T store?
• I'm thinking about getting my credit check out of the way, so it won't take as long to get my phone.

UPDATE: Turns out, if I want to get my corporate discount, I have to go to an AT&T store. I was leaning towards going to an Apple store, as I've never had any bad experiences. I just want AT&T to have better customer service than Sprint... please.