So I'm trying to figure out my plan for Friday morning, but keep coming up with more questions and scenarios. My latest thought was if I should re-jail my jailbroken iPhone before Friday. I'm still not sure if I'm going to the Apple Store or AT&T, but either way, would it be beneficial to do so? I'd imagine that they would just need to pop out the SIM card, but I don't want to run into any issues. An AT&T rep told me that they were doing the activations in-store... but everywhere online says they're having the customers do it via iTunes at home.