I'm looking for some insight as to the attire one is expected to wear in the Sky Clubs. I know Delta's official stance is as follows:
Attire while in a Delta Sky Club must be in keeping with good taste and a dignified atmosphere.
But I'd like to hear some real-world information from people who actually go there. I have a few long layovers coming up that may warrant spending the money to get a day pass, but I don't want to be "that guy" and get dirty looks or be turned away because I'm not meeting the dress code.
I typically wear a t-shirt, shorts, and sneakers when flying. I'm guessing that probably isn't allowed, but would throwing on a polo be enough? Or are there people that wear t-shirts and shorts inside the Sky Club? Is it different at different airports or different clubs within the same airport (I usually fly through MSP or DTW)?