Kroger supermarket is just down the road, we walked there. Just past there is a Whole Foods. The shopping center where the Kroger's is located has some nice restaurants you should try. The marina next to Disney has all kinds of watersports and different rentals you can do with the boys. The restaurants on the other side of the marina are pretty good, despite some not so stellar reviews, we didn't have a bad meal. Also, there is a french bakery there, it was very good. Definitely rent bikes, either thru Disney or one of the island bike rental places (they will deliver them to you). I'd also recommend a kayak trip !
Have fun, we really enjoyed our trip last month, even sat down with a realtor !!