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All my life I've always wanted
To have one day just for me
Nothing to do and for once nowhere I need to be
With no lessons, lords, or lunches
Or to-do list in the way
No one to say when to eat or read or leave or stay
That would be the day
Anneliese is wishing to spend a day on herself, giving herself time, when she wouldn't have to attend lessons, be told by somebody what to do and when. Basically she wants spend a day in peace.
It must be odd and tiring for her right, to go and attend to Lords, classes, and functions: attend to almost everyone except of herself - all just because she's a princess.