Here is the response to my question about CCW at the Texas State Fair.
A person holding a valid concealed handgun license is permitted to
enter onto State Fair property with his/her concealed handgun. Licenses will
be examined at the entrance by an authorized security supervisor.
Handguns will not be permitted inside the Cotton Bowl, a facility
defined under Texas Penal Code 46.035 as "the premises where a high
school, collegiate or professional sporting event or interscholastic
event is taking place."