Another option for hotels with shuttle service is the Downtown Disney hotels. The Holiday Inn just reopened, and gets good reviews. They all provide shuttles to the theme parks, and also you can walk to the Crossroads shopping center, which has a few dining options (McDonalds is one, plus some low priced places).
I'd definitely start with disboards, and maybe buy a good guidebook (not the Birnbaum official one, but an unofficial one). Disneyworld is NOT a vacation where you can wing it - you really do need some good information before you go.
I'd go earlier in your timeframe - in June many schools let out, and the crowds get a little bigger. Plus, the weather may be better.
Since you won't be driving, I would also use a towncar service from the airport to your hotel - one that provides a short grocery stop. That way, you can pick up items for your room, like breakfast foods, snacks, bottled water, drinks, etc... I like quicksilver tours and transportation - the drivers were very professional and prompt. They meet you at baggage pick-up with a sign so you know who they are, and then I like to stop at super Target - very low prices and enough selection for the week.