Popular Guatemalan beers are Gallo lager, by far the most popular with Guatemalans, Victoria, Brahva a light pilsner style, Moza dark bock, Cabro, Monte Carlo premium, and Dorada. Don't be surprised if you get salt and lemon with your beer. It's a custom to put some salt on the toes of the bottle, and screw out the lemon in the beer. Sometimes it is mixed with V8 vegetable juice, and the concoction is called michelada.
Guatemala produces a number of rums, including the superb Ron Zacapa Centenario which is aged up to 30 years.
Tequila is a very popular drink in Guatemala.
Guatemalans usually dress down when they go out.
If you order a bottled drink, you will normally get a tissue to clean the bottle. Coca-Cola and Pepsi-type products are available, plus many from local soft drink manufacturers.