WHY Warmer months = colder drinks = straws. Over 500 million straws are used in the US, daily. That's a lot of plastic waste. We will reduce waste by asking for no straw.
HOW When we order a drink, explicitly* ask for "no straw, please". Then, drink out of the cup. Smoothies, cold-brew, juice... all drinkable right from the cup. Give it a try. *If we don't ask, they might give us one by default.