You'll have a blast. I was in Vegas at this exact same time last year and just to warn you, it will probably be hotter than the devil's asshole. Then again, it was 100 degrees every day when I was there and to me that is hotter than the devil's asshole.
Here's a piece of advice that a lot of people might not mention... keep in mind that with the heat you will get dehydrated VERY fast if you've been drinking. The first day I was out there I did a lot of walking outside and it was brutal because I had been taking advantage of the free drinks in the casinos. Gave me a headache that I can still feel to this day. Not saying don't drink, but try to limit your walking outside during the day and make sure you drink a lot of water.
You'll also come to hate those annoying a-holes that stand in front of the entrance of EVERY casino and try to get you to go to their timeshare property seminars. They will offer you all kinds of free comps, then later on drop the bomb that you have to waste half your day attending one of these seminars. Not worth it IMO.
Also, when you're walking around at night you'll be harassed by guys shoving those hooker/porn cards in your face every 3 feet. I'm not joking when I say every few feet. And they literally put them in your face. After about 5 minutes it really starts to piss you off.
As for food, the Augustus Cafe at Caesar's was awesome and very affordable. Typically $12-$15 a meal. There was also another very nice restaurant at the Venetian but I can't remember the name of that one. And the Venetian is a must-see. Enormous casino with lots to check out.
I didn't play a lot of poker but I wasn't impressed with the room at Caesar's. Decent, but not great.
If you're a fan of fake boobs, hang out at Bellagio. I think about 80% of the waitresses I saw there had ridiculously large fakers.
That's my Vegas novel. Have fun!