planet hollywood. A+. Ive stayed there. Im going again. Great rates, and a nice, happening place. I love it when they parade all the hot chicks to deal the tables and dance after 10PM
Bellagio sports book might be the best. PH was also good.
one of my favorite things to do late night if things were slow... you go to a bar in the casino, play/milk 25 cent hands of video black jack, and get 12$ drinks for free. You just people watch, and people come in and you have some wild conversations with people from all over the world. You will also likely speak to the occasional hooker which is interesting.
Just be VERY careful for your drink tabs. Drinks in the casino are like $10 retail. Also, be VERY mindful where you eat. It could make a huge difference. You can walk in a restaurant and spend $80 a plate for mediocre crap, but 10 feet away, spend $5 for some really good grub. my first time, I really hosed myself in those 2 categories.