We are traveling to CSA this December and I was curious what hours someone would be at the concierge desk so we could make reservations? We went to CTI last year and by the time we got there (around 5 or 6pm) there was no one at concierge and we couldn't book anything until the next morning. Unfortunately for us, almost everything was booked and we had a lot of trouble being able to do the things we wanted to do.