Yes one Trick-or-Treater is based on Luck.

But you know what is really fantastic.
If you turned in five collections you received the Vampire Trick-or-Treater.
Four collections for Lower Levels.
Basically everyone has a chance to win one pet.
There was a lot of fantastic prizes available.
Just for doing things around your farm to collect event items.. things that you would be doing.
If you bought the boost building this enabled you to turn in a fair amount of collections.

Storm8 you did an outstanding job on all of the prizes.
There wasn't anything I didn't like.