Of these 200 people there where 50 or less from BYC ( includes the children ) - all of those donated something as far as I know .I brought $20.00 of Hofman hots myself
The others....nON byc I didnt see that they brought anything . (You would know this better than me )
I think if you are going to invite the public you should charge because most probably didnt bring anything..Right ?
You could just make this one a closed group or charge a cover charge per person
Figure maybe $5.00 each ..If you say Free Food People will Come & THEY DID !