I live in Dallas now for 6 years and have been to the fair a couple of times. I enjoy going the one day a year.
I'm not sure I would go to the trouble of flying in from NY to see it though..frankly...just driving down is almost enough to disuade me.
There is a big game every year between U. Texas and U. Oklahoma, big local rivalry, called the 'red river shootout'. Do not go on that day, like we made the mistake of doing. It is absolutely a wall to wall madhouse.
But, has some fun things. Best corn dogs you have ever tasted, they were invented here. Every year they do some signature dish of deep fried food. Last year was deep fried butter, year before was bacon. But can get like, deep fried snickers, deep fried cheese sandwich, deep fried twinkie....
Lots of exhibits to see, livestock, stuff like that. Lots of fair rides, and games, typical stuff.