Designating something which allows or permits full rather than limited access; specifically designating a pass, badge, etc., which allows the bearer unrestricted access to all areas of a venue.
Origin
1950s.
Definition of all-access in US English:
all-access
adjective
Designating something which allows or permits full rather than limited access; specifically designating a pass, badge, etc., which allows the bearer unrestricted access to all areas of a venue.