Abstract: To construct an admission system that raises a limit to the number of sales of tickets such as annual passport relative to an upper limit of on-site guests so as to reduce guests frustrated by inability to buy the tickets and that achieves a high degree of guest satisfaction. An annual passport 20 as a ticket is available as one that permits admission on odd-numbered days and one that permits admission on even-numbered days. Judging means for admission 16 of a server 4 fetches from a recording part 12 ticket information 14 corresponding to a ticket ID transmitted from a control device for entrance gate 2, and determines which of “the odd-numbered day” and “the even-numbered day” is the admission day of the pertinent annual passport 20. Further, the judging means for admission 16 determines whether today is the odd-numbered day or the even-numbered day and whether or not today matches admission day information of the pertinent annual passport 20. If it matches, the judging means determines to permit admission.