Like I said organizing a party is a lot of work and money, and honestly, amateur promoters can't take that risk to organize it just for Charity. Well established promoters have already made plenty of money from their other events that they can care less to make money out of Charity events, its like a Public Relations for them also. My suggestion would be to have the party and assign someone there to collect any additional donation that people might be willing to. That way we can have both goals achieved. How about that?