At the rodeo you definitely want to be as close to the action as possible. One of the joys of rodeo attendance is ducking the dirt clods, especially when the barrel racers fly by. If the bulls bounce off of the fence in front of you watch out for the discharge from the nose and the other end as it slings around trying to dislodge the cowboy.
For Mexican food I highly recommend El Rancho Grande. If you drive from Dallas to Fort Worth using I30, and then through downtown Fort Worth up to the Stock Yards you will drive right by it. My wife and I have been eating there for over 40 years.
If you prefer BBQ, Risckys is right across the street from the rodeo.
http://www.risckys.com/locations-bbq-stockyards.php
I do not know if Jimmy Riscky still owns it. Someone told me he had sold it. The Risckys lived a few blocks from me when I was a kid in Fort Worth. The last time I was there the food was quite good.
Y'all drop by Fort Worth. It is the Texasmost and certainly where the west begins.