The ticket dimensions were 2.5 x 7.5 in (6.35 x 19.05 cm).
Reprint Ticket
The thermal stock ticket dimensions were 2 x 7 in (5.08 x 17.78 cm)
'Other Athletes' ticket
Note the $0.00 price stated upon the ticket.
These were distributed to Olympic athletes wishing to attend other events and sessions when they weren't competing in their own events.
The 'accreditation required' would have been their special athlete passes, identifying them as competitors and allowing them access to out of bounds areas.