Most of the best coffee is exported, so don't expect consistently good coffee everywhere you go. What you're served may have been made from preground coffee that has been in a percolator for an hour or two. If you want it black, you want cafe sin leche.
Herb teas are widely available.
Milk is pasteurized. The more popular North American soda pops, such as Pepsi and Coca-Cola, as well as sparkling water, called agua mineral or soda, are popular and widely available. Refrescos are usually highly sugared. Roadside stalls also sell pipas, green coconuts with the tops chopped off. You drink the refreshing cool milk from a straw.