Juliette gets to the other acts as much as she can to make sure she knows who is who and thusly make them off-limits. Poor James. So taken in. She'd almost feel bad for him if she actually cared. She'd like to borrow and trade books with him on occasion.
Oh, he's more than welcome to a little private showing. She doesn't drink from other Carnies unless they volunteer so if he doesn't ask or has said no thank you, she doesn't try. But she totally would use her fangs to tease even if she's not puncturing skin so he's felt them.