They keep a meticulous list of client preferences: soda or soft drink, sofa or couch.

他们记录有一些列客户的参考：苏打或者软饮料，沙发或者长沙发。

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Soft drink: Nonalcoholic beverage, usually carbonated, consisting of water (soda water), flavouring, and a sweet syrup or artificial sweetener.

软饮料：不含酒精的饮料，通常充有碳酸气，含水（苏打水）、香料和甜味剂。

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If you don't want to abstain entirely, there are ways that can help you cut down, including opting for smaller glass sizes, diluting alcohol with soda water or a low-calorie soft drink, alternating between alcoholic and non-alcoholic drinks and keeping a few nights each week booze-free.

BBC: Alcohol calories 'too often ignored'