Congratulations. I love my tablet, I've had it nearly a year now and it's still turning heads for it's slimness, battery life etc.
The only annoying thing about mine is that it doesn't have a built in stand (obviously yours is attached to the keyboard) so I can't easily prop it up.
The best use I have of it is taking PDFs or Powerpoint presentations, printing them to Journal and writing notes on them. Problem is, when I'm in lectures, I'm more tempted to be surfing the internet or writing emails than listening to the lecturer...!
My battery has lasted up to 6 hours sometimes, but mine is a P-M 1.0GHz Ultra Low Volt, and I bet your screen is brighter than mine, which can only be used indoors.