If you are here for the Genius Bar, make sure you have a reservation first. They are very friendly and helpful here. I love the service. They listen to your concerns and try to explain what they are doing and why something works the way it does.
If you're here to shop around, have fun!!! The people are helpful and answer all questions without being pushy! You can test everything out in-store and see how it works before buying! I LOVE APPLE!!!