I loved the blue milk as well, didnt really care for the green. As far as the cantina, I had a great experience when there. Server was attentive, didnt wait long for drinks etc...They even did a thing where the power generator stopped working and they had to hit it with a mallet to jump start it. We had a blastI think I’m the only person I know who genuinely likes the blue milk. Honestly, that may say more about my sense of taste than the quality of the drink.
I will also add that I actually prefer the “chilled” version from the cantina. I thought the frozen version was just okay, and it did have a weird consistency. The milk and cookie drink was great though.