Good idea, but being a cover driver i probably won't be able to establish a good enough relationship with the businesses. Even though i seem to end up in the same areas week by weekI bring my lunch in the cool months and eat in one of the many break rooms on my route. In the summer, I'll eat at a few different places inside AC.
I also have a gym on my route that I can use the shower or pool at lunch. In south Florida, that helps beat the heat.