Just about every suburb in Sydney has a restaurant or two, a cafe or coffee shop, and a place that sells takeaway food. However, there are are a number of places in Sydney where you can window shop through many restaurants and make your choice.
Cafes serving breakfast start opening at 6AM and breakfast is usually served until 11AM, or occasionally all day. Orders for lunch start at about noon and continue until about 3PM. Many cafes will start closing late afternoon, although a few may remain open for dinner. Restaurants usually open for dinner around 5PM-6PM and while there are exceptions (usually concentrated in areas with active nightlife), last orders for dinner are typically taken around 10PM. Restaurants in business areas open for lunch as well. It is common for restaurants in suburban locations to sometimes be closed on Sunday, Monday or Tuesday nights. It is more expensive to get a sit down meal in the evening, than it is for lunch.