The fact that the event rewards got added to an already existing, standard vendor is what confuses me about it though. If there was a special vendor that only showed up in the gold saucer for this event, there would be no question that once the event was over you wouldn't be able to buy the TT card or the orchestrion rolls anymore. But this time they were just added in.

I don't recall there ever being an event that added the rewards to a normal vendor. So when the event is over and the vendor doesn't go away, do the rewards just leave his shop? Or will they be purchasable by anyone that completed the quest but didn't manage to get enough MGP during the event? That's what I'm trying to figure out.

Still haven't seen anything about it from SE, so it's still just speculation and looking online for right now while I do the MGP grinds.