Crowded Restaurant - set concept art for an animated movie

This is a concept art for an animated movie in very early stages of preproduction. The project is still without a title, however, several story points have been established. This is one of the moments depicting main protagonist on her daily job at the fancy restaurant, doing her routine automatically and being focused on her inner thoughts so much that the entire scene deliberately omits all the restaurant guests from our view, and hers as well...