Partying to collect a bunch of certain things. Sometimes the certain things are pieces of a whole thing, so we either collect the pieces to build one whole thing. Or collect a BUNCH of pieces to form a BUNCH of whole things in order to get fun prizes.
A hunt is just an extra thing ATA does where you collect items by doing parties. Either you collect a few different things to create one big thing (like the coin) or a bunch of things and there's a set amount you're supposed to get (like candy) or a combination of both (the Easter baskets) They do them every so often, we just finished the Easter hunt.