Additionally, regarding insults, you cannot be insulted unless you give the person doing the insulting permission. Most agencies will deserve it, especially the one which ripped off Florida Models founder Kitty several years ago when they did not pay her for a job which she booked through them. It's not perfect, and it does not always work, but it is a start.
The bottom line is that, even if it is charity, if you make any money, the models need to be paid, too. Most jobs will be for the Tampa Bay area. We know who you are, and what you do.
That is why you need to make them agree to it before you pay them a dime and do the shoot. Kitty and Ken were there are the beginning of my career in the modeling industry, way back in , when I barely knew what an agency was, or what modeling was all about. Basically, a model who is serious about their career is going to be dependable, professional, and they are going to do their job.