If you are European or in North America, you're probably used to this drink being served with crushed ice, but until you have tried it with small cubes...
a Daiquiri would be my favourite cocktail and I leave out the sugar, but no amount of sugar could make this palatable. Maybe I have a particularly rough bottle of Cachaca but I won't be trying this again.
Don't leave out the sugar, as it's essential to use sugar when muddling the lime to extract the essential oils from the lime peel. A caipirinha made right is sublime.