Graphics: Awesome! Really, I didn't expect such a quality.
Sound and Music: the same. They were very enjoyable.
Furthermore, I loved the possibility of upgrades (interesting and useful upgrades!)
The game was challenging, but not that hart that you go nuts.
The option to name your restaurant was nice, too.
All in all, it was a really cool, recommendable game for people that like playing food-serving games with a high quality.
The fact that it was only a demo was not that bad in my opinion. I still had a lot of fun!