You cant bring your own food and drink...TSA regs
Huh? Again, constant traveler here, and the TSA has no such regulation. The only thing you can't get through security is liquids...unless you're smart about it. Remember that liquid is allowed--as long as it's in containers of 3.4 ounces or less and in a quart size plastic bag. So, in preparation for my flight to San Francisco tomorrow afternoon, I presently have such a quart size plastic bag filled with eight shot bottles of Bacardi Light Rum. (To keep costs down, I refill them at home from a half-gallon bottle through a funnel when they run low.) Each of those shots is about 2 ounces, well within the guideline. I place that bag in the tray along with my other personal items every weekend, and no TSA person has ever questioned it. Most airlines provide free soda, but if it's US Air (and I'm not in First Class) I just buy a Diet Coke after I go through security. You can also bring any other non-liquid snack you please, and--yes--even a burger and fries from three gates down.