When you go to lighthouse it says it's a social space. Which leads me to thinking it may become available for everyone in the future as there are areas locked off at the moment. Also it was said that FoAF was supposed to be a bounty through the trials, however apparently one of the steps was to get 10 wins on one card but at the moment there's is only nine win spots. That being said I don't think it should be as easy say you wish it to be to get the chest, that chest usually gives good stuff