I was looking at the submission form for an escort agency and one box they have is marked "special request." Can I mention for example that I'm looking for a good bit of DFK or does that run a risk of being considered solicitation? I know this sounds like a stupid question but I'm just trying to cover my bases.

my personal experience with agencies is that special requests somehow never make it to the provider.

but the best way to find what you are looking for is to read the reviews of the ladies you are interested in. If several of her reviewers mention what a great kisser she is, AND you don't have funk breath, you should be in great shape.

 
One other thing you might do is to PM her reviewers and ask them, but be aware that until you get a "board presence" either through being active on your regional board or through writing reviews, a lot of guys will be loathe to share too many details with a complete unknown, but don't worry, we all start off here as "complete unknowns"