Went to McD yesterday with one of my daughters. Noticed our store had a change of straws. Tried it, and it was surprisingly OK for softdrinks, survived for over two hours without affecting the taste of the drink of the ability to sip through the straw. Didn't try milkshakes with it, but the last time I tried a Milkshake with a paper straw was over at Pizza Hut, and at first it was OK, but very quickly became soggy and difficult to use (largely from the end stuck in the drink itself). And the container the milkshake came in was NOT suitable for sipping via the actual container. I'd imagine it'll be largely the same with the McD situation except for the fact that the McD milkshake comes in a cup that is drinkable from.