Try to make a chance to watch the parade in Magic Kingdom. Its SO cute and so much fun. If you go to MGM, you MUST go on Tower of Terror. That was my favorite ride in the whole place. I went on it 5 times. I second Kyle's suggestion of confirming all dining reservations. Call the morning of your reservations just to double (or triple
) check.
My personal advice would be to not turn down any ride because you're afraid of it. When I went to Disney the first time I promised myself that I'd do everything no matter how scary it looked, and I'm glad that I did.
HAVE FUN!!