If you don't like what is being offered, politely ask for a minor concession. If the people handing out the free food choose not to accommodate your request, then that's unfortunate, but life isn't fair.
Personally, I feel anyone making demands to people providing charity is an ahole. So do most people. Then there are retards like Linda that don't do anything but sit on their fat depends filled asses that want to blow left wing nutjob smoke.