Nice! Yeah, whenever they have spare packs, they sell them. I've been prereleasing since Triumphant, so you're one up on me there for being first ;P
I couldn't go to my Undaunted one, much to my dismay, but I've been making up for it. I really love prerelease promos, so I'll have to try and trade or buy the other legal ones. Apparently Pichu as a promo for HS was so broken, because everyone got their perfect bench up first turn!
Also, for EP, we get code cards with every pack even after the set release, so that'll be a bonus!
Nice to know you're well into the TCG like myself!