you can do either. When you activate it, I think its good for a year or so, so you don't have to take it right away. And once you pay via credit card, it is instant access. If only TBR was like that!
So there is no way I can just click activate when I want it to be activated? I am asking because my father is paying for it but he wants me to buy it now and i wont start using them until April.