It's not clear to me if the tickets are refundable or not based on the purchasing site. Are these tickets refundable, if yes, until when?

I'm thankful that I was able to go to my first MagicCon earlier this year, MagicCon Chicago, where there was no snow

Merry Christmas y'all. I'm gonna do a MTGO code giveaway Holiday Edition!
You must:
a) FOLLOW me
b) REPOST this
c) REPLY with something you're thankful for in Magic the Gathering this year.

The giveaway will happen next Monday! Have a good holiday yall <3