I see for the tickets for Atlanta,there are 2 proving grounds. If I make it to the next stage (doubtful) of the main event, do I get my $20 back for the 2nd proving grounds?

Honestly, what kind of question is that? I do not want to come across rude or something, but why would you get money back? You pay for an event, you can make the best of it. Win it all, get kicked out of the main round and participate in proving grounds, or not participate at all.

Or maybe, there is something I misunderstand / do not understand. I'm not from Atlanta (not even the US), so I can't really tell without further context/information.

Jesus, a simple no would suffice. I was just wondering, no need to be a ***** about it.

https://www.fantasyflightgames.com/en/op/l5r-lcg/kotei/

Scroll down to Event Structures. They discuss this.

13 hours ago, migs6000 said:

Jesus, a simple no would suffice. I was just wondering, no need to be a ***** about it.

That is why I said I do not want to come across rude. I really wanted to understand why you would reason that way. Sorry if I my wording offended you.