No sleeves, the cards look a little worse for the wear but they are the toughest cards I have out of any game. The weight of the cards really helped with the wind as well, not once did any cards get blown away.
The trick is finding enough space for the nine flags, but the rock worked great. It was such a great spot, my wife and I talk often about how much fun we had there.
I never sleeve my cards either, I just thoguht it would make a funny joke
I was just voicing the thoughts of many an OCD gamer....but they were probably too mesmerized by a girl in the picture, and of course that "outside" thing they keep hearing about...