Kirkman Rd, which is just outside the Universal property has a number of inexpensive places. There's a Ponderosa with a $3.99 breakfast buffet and, neraby, the Orlando Ale House, which is good and very reasonably priced. There's also a TGI Friday's at the corner of Kirkman and Major.
There are also a Wendy's, McD's and a Burger King at or near the intersection of Kirkman and Vineland.
Go north on Vineland a short distance and you'll find in a shopping center on your left Cheeburger, Cheeburger, which has great burgers and shakes and just a round the corner a BBQ place, the name of which escapes me at the moment.
Cross I-4 on Kirman and you'kk find a reasonably priced Indian restaurant, Far Pavilion, one of my favorites.
in short, there are lots of possibilities.