I have gotten the below win twice now since the Pond switched over to the ticket system, and have not received the Mallarchy Pond Mega Winner achievement. I am uncertain if this is an error, or if the achievement is now retired. (or maybe red =/= grand prize?)

EDITED because the image wouldn't work: click here

I don't know if the achievement is still active or not, but there always was a difference between first place and the grand prize

, that I did not know. And now I feel foolish. Thank you for answering!

No worries c: I'm not sure what the icon it shows you for the grand prize is but I got it once and it was definitely different because I've also gotten the first place