Well, at my pre-release( only one, going to PS one soon).
So, I went with my friend, and assuming you got a player id already, While you wait for the packs and such to come, you can play a game on DS, battle other people, look at their binders (Someone there had, 2 mewtwo FA, 1 mewtwo EX (non-promo), and 2 shiny rayquazzas!). When the time comes, they give you a specific table to sit at and they give everyone 6 box directly out of box.Speaking of boxes, people there buy lots of sealed boxes!
You open the packs, and tell you 10000000 times, to only use 40 cards. You get a person to battle, and you fight. Afterwards, you wait 5 minutes and get another one. After all that, you can trade and do whatever. Also, during the battles, they give you a unfolded deckbox and the promo card.
Hope that helped! Also, going alone this year,