That's on the Formosa Gardens road, right? If so, you'll have a grocery store about 1 mile or so if you take a left on Rte. 192 (W. Irlo Bronson). There will be a Publix on the right just a little over a mile away near Orange Lake Resort. The name of the plaza is Orange Lake Town Center.
There are lots of restaurants on Rte. 192 not far from where you're staying - Houlihans, Sizzler, the Magic Mining Co, Colorado House of Beef, Perkins, Angel's Lobster Feast, etc (most offer discounts/coupons in the Orlando area magazines). I can't vouch for any of these since it will be my first trip in that area as well (we're staying one road over on Old Lake Wilson for our trip in a few days). Maybe someone else can help you with restaurant reviews.