You can find out more HERE and also get some help with your costume. If you dress COMPLETELY up you get an entire meal free. If you wear a partial costume, like just a mask you get a free entree.
You can even print out a costume in pieces here!
We made masks, they wore white and black with spots, they were completely dressed up and we ate there for breakfast, lunch and dinner free! My kids get WAY into it, they work on their costumes for days and so we make the most of the day by going for each meal. It is a fun tradition in the summer for us and it keeps them busy!