Eating is what I do when I'm not drinking or getting a massage or sitting by the pool trying to chat up a server in the name of research. I can eat all day and all night and I have very little discipline when it comes to knowing when to stop. Of course that helps me when I need to come up with a huge list of places that you can eat at that will not empty your wallet. I chose 77 because 7 is not enough and 777 would have my mid-section dropping below my knees.
Pizza, burgers, hot dogs, pasta and a few places that you would never consider cheap. I didn't include happy hours, but I could have and ordering a salad and water are not really my idea of cheap but they might be for you. Most of these selections are not fast food and you can get some real meals at most of these restaurants. The most important point to remember is that Las Vegas has plenty of cheap food options and this is just the tip of the iceberg.
Go ahead, start eating!