Belize protects its local market as much as possible.
Therefore you will not find available in Belize to buy any regular coke or any other regular soft drinks in cans only locally made (not bad, very good really) in glass bottles 354 ml or plastic bottles ½ liter and liter size.
DIET DRINKS is limited what is available in Belize. Diet coke is sometimes available, but hard to come by. The other diet drinks are much harder to find.
Tourists usually comment on how nice our soft drinks taste.