I saw my first case of opened Blind Bags today at Walmart, the blue series (pity too, I wanted Wave 3 or 5 more) I saw a Shoeshine and Fluttershy bag opened, both had all their contents still, but it was sad to see.
I grabbed 3 bags, (probably should have got more) and hoped to get a stallion, Minuette, Amythest, or Trixie, and ended up with Merry May, Metallic AJ, and Rarity. I had no codes on me, so I just grabbed 3 at random.