From the post below, if you want a real ethnic experience, hit Chinatown around lunchtime and check out all the produce, fish, meat, noodle vendors etc. Maunakea Marketplace is set inside the block bounded by Maunakea St, Hotel, River, and Pauahi, and has one section for vendors and one section is a food court, full of mainly Filipino and Vietnamese places, but maybe a couple of Thai, Japanese, and one faux Singapore Chinese place. Probably the most inexpensive of all the places mentioned...certainly cheaper than comparable things in Waikiki, Ala Moana, or the food trucks, although the quality may not match Shirokiya...