/*
         * Returns the number of guests currently booked for the current
         * booking(also 0 if no booking is currently loaded).
         */
        public int GetCurrentNbGuests()
        {
            int nbGuests = 0;

            if (CurrentBook != null)
            {
                nbGuests = CurrentBook.GetNbGuests();
            }
            return(nbGuests);
        }