Work with a Disney-certified travel agent.
I can't stress this enough: they're no cost to you and they will provide you a wealth of up-to-date knowledge and recommendations! My wife and I worked with Mouse Fan Travel last time we went to WDW, and I recommend them highly. Your travel agent can give you suggestions on everything from where to stay to what to eat, and can help you make Advance Dining Reservations. — Quora user Michael Lee