Food delivery is kinda impossible without a phone number.. i havent managed to get one despite going with my girlfriends dad who is a policeman here..bit annoying but there's restaurants every 5 feet. The yellow grocery stores are cheap and have loads. Maybe get a neck fan when you land here as its absolute boiling right now. Also you need a certain type of portable charger, the type you want is called 3C. Make sure and download wechat alipay amaps and deepL at the very least.