I'm so glad we were able to be a part of this yesterday.  Being on staff was a new and totally different experience and I loved it (though a part of me is bummed we missed the chance to compete in an Alex-written game).
800 people is a lot of people, I had fun in the morning playing crowd control (and even got a complement from Disney security on the job I was doing 

 ).  The best part was that where I was, controlling the end of the photo line, meant I got to see and say hi to literally every single team that came in.  I found that a really fun and invigorating start to the day.
Meanwhile, I think my favorite moment of the day came at the end while we were handing out game materials to people who wanted to take them home.  To that point I had only really looked at the stuff dealing with the station we were assigned to.  So while sitting there I was reading some of the other quests...and came across one where Alex had clearly taken inspiration from 
this thread.  That gave me a good laugh.
Anyway, I was not disappointed in this first glimpse of the other side.  I'm not ready to hang up the iron-on transfers yet, I do see us playing again sometime in the future.  But I'd be happy to help staff again too.