Just stop! Please, put some thought into it, enjoying yourself at the convention means enjoying what you eat too. The surrounding food is not only bad for you, it taste like someone kept it between their buns in the hot sun for some time. Why the famous In-N-Out has not reached some deal to have a place to grab food at the convention hall still eludes me.
The other problem is you're no where close to good food in all directions. If you want to get something edible you"ll have to walk past Staples Center and a few blocks.
There is no fast food place nearby, no McD's, no diners, no nothing. In this case if you think you'd rather get food at the convention to save time, I'd retort just pack a lunch. I don't want to see you throwing up or having diarrhea later from the mess of dog drool and pig family jewels they call food. Pack a lunch, buy some lunchables, it's better than the crap there.
Same for drinks, the sodas taste less like soda more like fizz water. It's one of the reasons people hate LA. Pack water or whatever. Put it in the freezer and hour before you go.
There is but one Starbucks with a line if it's busy at LA Live, other than that you'll be paying a minimum of $16.00 for any sort of meal, and it won't be worth it.
Forget food trucks, I know they seems like a good idea, but factor in price and wait time and it becomes worthless. Last year most of the trucks were high priced anyway with small portions.
Don't go to Joe's LA Market and Deli on the corner of Flower and Pico near the subway. I think the sandwiches are a rip off and taste terrible, the other problems is their refrigerators for drinks are only kept like room temperature. Nothing will spoil, but if you want a cold soda forget it, it gets crowded and long line.
So here's two places you can walk too and are worth it
Original Pantry Cafe-site is kind of creepy with music
877 S Figueroa St
Los Angeles, CA 90017
Open 24 Hours
Breakfast food at fair prices, might be a wait, it is very well liked and always busy in the morning.
3 blocks away
1037 S Flower St
Los Angeles, CA 90015
So Mexican food may float your boat and it's about as far as the Pantry, a bit more in price, but a least you might be getting more than those restaurants at LA Live. They do have some decent eats for fair prices.
3 blocks away
Now you can walk to the corner of 8th street and flower or figuerora and you'll have Subway, a pizza joint, an asian food join and IHOP, but that's some walking. I don't recommend it. They're past LA Live 5-blocks away.
What about ESPN Zone-terrible, bowling alley-terrible, all of LA Live terrible.
Hooters overpriced, same for Excalibur Restaurant.