Post here to let me know you'll attend, yes.
The online swap has begun! (That's where we trade seeds in advance via the seed swap tool)
Note that to claim any seeds, you need to "join the swap" and also need to list at least one item, clicking the checkbox for the swap! If you haven't done those things, go ahead and take care of them tonight -- but I think the system won't give you "tickets" until tomorrow night.