Because of all the things you might think to do when you get your offer confirmed:
- Find the people you're going to be studying with!
- Find the peope you're going to be living with!
- Start looking for all the cool stuff you're going to need to move into your accommodation with!
- Going out and celebrating with your friends
- Wondering what kinds of societies or teams you could join
I can't imagine why someone's first thought would be
I wonder what type of academic planner I should get I also suspect that OP might not quite realise what she's getting into by going to university, as academic planners are going to be the least of her concerns, and also are very rarely used, because... well, you're not at school any more, and it's all far more free-form learning.
If she needs something to keep track of things, that's very responsible and that's how some people manage their learning best, but she's a big girl now and she can use a bog-standard diary or a calendar... And it should be the last thing on her mind now, merely hours after she's got in!
So yes, it seems... Pretty amazing that this is what her priorities are!