If you have any specific questions directed at a certain photographer before you book your session, the concierge will be happy to pass those on for you prior to your shoot. If you are tied to a certain day or week for a photo shoot and rather not book a session unless you know if the photographer is available, contact the concierge first and she will find this out for you. Other generic questions can easily be answered by the concierge prior to paying.
Once you have signed up for your photo session and the photographer has agreed to do the shoot, you will be given his/her contact information to freely talk with one another.