The McDonald's in Perdido Beach plays an important role in many of the books, and is mentioned in almost all of them.
Soon after the creation of the FAYZ wall, Albert took over the McDonald's, serving the normal food on the menu. When the hamburger buns ran out, he switched to waffles and bagels as buns instead. After all of the food in the McDonald's ran out, he turned it into a sort of night club. After the events of Hunger the "McClub" is shutdown due to the power plant shutting down. It was vacant for the remaining time of the FAYZ. Also, Albert got some of the "berto" currency from here, using old game pieces from an old monopoly promotion.
After the FAYZ, it is reopened. The people behind McDonald's make an offer with Albert, with Albert doing an interview in exchange for his university fees being paid.