Also some good excuses for staying in the wanchai area (to bad we sometimes need to have excuses for this) are the fastfood shops. Not that many Subways arround Wanchai for example.
Also Thai Hut, they have awsome food, reasonable prices and sometimes a great view. depending on time quite a lot of WG's are hanging out on the street between Mes amis, delaney's and Thai Hut. Sometimes, on the way back home after work, i just stop by there to get some takeaway (mostly food, sometimes a dessert on top
)