So I found of a way to get beta keys but it's impractical and you might feel bad doing it. This site is "giving" away 30 keys a day. So some people that want to get in can if they show up at the right time.
Sign up for site.
Do the "quest" of liking them on facebook. (Quests may vary?)
Trade points for key when they have some. It was around 4:30 PM Pacific when I saw some.
Just read the comments to judge if they're gone for the day.
Only go here if you're that desperate.
Is it worth it? Only a couple of weekends left of Phase 3 then it's open beta. The last day of Phase 3 is suppose to be around July 15th. So unless you really want to get in on this, maybe not. F sites like that.
They're all gone already.
From Games Radar. There are 1000 keys to be given away.
Also something worth noting at the bottom of the page. "The next play sessions begin on the Fridays of June 28, July 5 and July 12. The FFXIV Beta Phase 3 will end on Sunday, July 14 at 2am PST." I guess closed beta ends in the middle of July. Then we play for keeps.