When I still ived in Atlanta (moved here in '93), we used to take a cooler into the Braves games. I, too, had just assumed that the rules were changed.
Rangers tickets are also more expensive than tickets at MMP. I know this because I just bought some tickets and noticed that they were higher than what I am used to paying.
Yeah, everythings more expensive in Dallas...but I got tickets for me and the kidos for the Astros vs Rangers here and did the family pack (see below)... Rangers Value
Yeah, I went to a Rangers game last month and had no idea you could bring outside food in. I always thought that was standard to not allow outside food.