I am looking for information on how restaurants (such as Pappasito's and Monterey's Little Mexico) attract customers.
Start with the Library's Marketing Guide: http://library.uhd.edu/marketing
There a few different databases you can try. Business Source Complete and ABI/Inform are two of the best resources for business research. Also, you might want to try PsycINFO since why people choose places to eat/shop has a psychological element to it.
Try searching terms such as:
“restaurants” AND “consumer behavior”
“food service” AND “marketing”
“restaurant” and “marketing”
"food service" AND "consumer behavior"