Trying to get all my ducks in a row before setting up my wife's new iPad2. I'm assuming we'll have to pay for a separate data plan on the second one right? No way to use both on the same one I suppose? And I read somewhere that you can't use the same email address for two different iPads and that you could switch one or both to post-paid from pre-paid to get around that. Is that the case? So that if I want to keep them both pre-paid I would need to use her email address on her iPad and mine on mine? Then would I be able to use the same credit card for both?