How do I find out if Seattle attractions have reservations available before I purchase? June 17, 2021 22:40 Updated Atlanta attractions may be sold out or require a wait for the next available entry; for details, view the Availability Calendar. Related articles Why can’t I cancel or modify my reservation? How do I find out if Atlanta attractions have reservations available before I purchase? Who do I contact for advertising? Can my travel party split up to visit different attractions?