You’ll want to avoid words that sound unsure—usually, probably, etc. You really don't want to leave potential customers with any doubt about the quality of your beverages!  Also, overused cliché words and phrases like “never before” or “epic” don’t have much impact. And, it’s better to be clear on what the deal is and how long it will last rather than telling folks to “hurry in” for your “exciting” special.