I can't stand diet coke, and hate diet pepsi with almost the same passion. So that rules me out for any low carb diets in Hanoi then (e.g. Dukan) - unless I want to enjoy drinking water all the time.
For about 30 years I cursed soft drinks makers for not creating a sugar free drink that could be actually enjoyed. Imagine my delight when 'Zero' came along! This saccerine was added to coke, Sprite and Fanta, and they all rock!! Not even same ball park as the other stuff.
I'll cut to the chase: Where can I buy say 10 crates of the above drinks? That's 240 cans. Dans change 3 times the usual supermarket rate for Coke Zero - but I've never seen the others, so if anybody knows any wholesale sellers that would be fab.
There's contact details for Coca Cola Sabco here: http://www.cocacolasabco.com/Page.aspx/ContactUs
Vietnam: Vuong Dinh Hung Tel: +84 8 38961000 (ext. 211)
"In 2004, Coca-Cola Sabco acquired all three operations in Vietnam and immediately began contributing positively to the growth of the business. Today, Coca-Cola Beverages Vietnam Limited is comprised of three plants – Hanoi in the north, Danang in central Vietnam, and Ho Chi Minh City in the south – and operates nine production lines, including five Returnable Glass Bottles (RGB) lines, two canning lines and two PET lines.
In 2009, the three plants were producing 18,1-million physical cases of Coke, Coke Light, Fanta Orange/ Strawberry/Sarsi, Sprite, Schweppes Soda, Schweppes Tonic, Samurai (energy drink) and Joy (bottled water)."
Doesn't sound like they produce Zero and associated products but they are probably imported. Give them a call - if they can't supply you then they can probably give you the names of wholesalers who can.
Or else, ask your favourite soft drink retailer for an introduction to their wholesaler/supplier.