After driving from PA on our second trip, we discovered 192--there is every type of restaurant you could want within a 5-mile stretch. From my experience, Olive Garden has been incredibly fast both times we ate there (don't be put off by the extreme lack of parking and how crowded it appears) while the two times we stopped at TGI Fridays, service was poor and the food took forever to get there.
I personally like to have a car at DW to avoid the long lines for the bus, but it's certainly an advantage when you want to save money on food as well.