We often, well, every weekend, sit in the garden with the laptop and listen to music whilst enjoying a glass of wine, which the laptop is ideal for.
The problem comes when actually trying to view the screen. Its just like using a mirror!
Positioning the laptop away from the sun, opening up the umbrella in the hope it will help, but it doesn't.
Eventually, I end up carrying the laptop indoors to actually see the screen.
So it great for portable music, but a nightmare for any other purpose.