Models that work at a studio generally get 5 years added or subtracted from their real age as a security measure. So if the claim they are 18, they are probably 23-25. As for what models are willing to do, mileage may vary. Some models are more willing to try new things while other's are strictly by the book. I've always found that when you treat a model like a human being for at least 10-15 minutes before jumping right into it, you can usually get them to do just about anything you want. Anal, squirting, bondage, you name it and they'll do it.