Wpt Global. Exclusive freeroll

On WPT Global, there are some very interesting freerolls to play, such as the Exclusive Loyalty Freeroll and the Exclusive Elite Freeroll.
I see that many players are already registered.
How do they get the tickets?

Loyalty Freeroll tickets are awarded to players that make a certain level of deposits. I got mine after depositing $500. The elite one I think is for even higher level depositors, but sometimes they give out tickets for free through their Facebook.

I'm guessing it also has to do with how much rake you've done since I haven't deposited 500$ in WPT, but I have generated rake since I joined this room.

BTW, I'm just able to play the Loyalty one.