For those looking to cut calories while still enjoying alcoholic beverages, there are alternatives to some popular high-calorie drinks. Using data primarily from allrecipes.com, the article provides a list of calorie-rich drinks and suggests lower-calorie substitutions. For example, instead of a Long Island iced tea that contains 262 calories, one could opt for a cosmopolitan at 131 calories.
  

Key Points: 

1. Swap a Long Island iced tea (262 calories) for a cosmopolitan (131 calories) due to the latter’s lower alcohol content and cranberry juice.
2. A piña colada, a well-loved beachside cocktail, contains around 423 calories, while its alternative, the fuzzy navel, is slightly lighter at 367 calories.
3. Mojitos, which are high in sugar, come in at about 203 calories; a diet rum and coke is a sweeter and lighter alternative at roughly 100 calories for an 8 oz serving.
4. For those who prefer coolers, which can have up to 400 calories based on the brand, hard seltzers offer a popular and fruity choice at around 100 calories per serving.
5. Gin and tonic lovers can reduce their calorie intake by switching to a gin rickey, which contains 146 calories compared to the former’s 193 calories due to the substitution of tonic water with seltzer water.

Source: https://www.businessinsider.com/best-and-worst-alcoholic-drinks-for-weight-loss-2017-5