ticket panic
1) a sudden overwhelming fear that you have lost or will lose a ticket, such as for entry into a movie or theater performance, or for boarding an airplane; 2) such fear caused by having forgot or lost such a ticket.
1) As soon as I bought the airline ticket, I was gripped by ticket panic and shoved the ticket deep into my laptop case. 2) Every since I was a kid, I get ticket panic whenever I buy a movie ticket, and worry that I'll lose my ticket and won't be allowed in the film. 3) When my wife asked where the tickets to the Broadway play were, I was frozen with ticket panic, as I realized I had left the tickets on the kitchen counter in LA.