Secret pizza is the place to go for moderately priced pizza in Vegas. Its kind of hidden (hence the name). It is on the same floor as the pool table at the cosmopolitan. My personal favorite is the white pizza with sausage. Its a thin crust pizza with the perfect cheesy flavor the sausage are legit sausage slices and not the kind from dominos. The normal red pizza is also really good too and typically they have more options for it available.
It tastes extra good after you're done doing your business at marquee and have those drunchies. But the line is pretty long because everyone from the club goes there after. So if youre not going out at night I would recommend eating before 2:00 am because you will be stuck in a line full of less than sober people.
The pizza makes it all worth it though.