When u going in september.... What to do in vegas,, The free stuff ok here we go The fountains of Bellagio,the conservatory in the bellagio, sirens of TI(not very good),the volcano at the mirage,and inside of planet hollywood there are several different little shows,theres a big top show at circus circus,the show in the sky at the rio,several shows in cesars palace mall,. I am sure there a few other things that are free to do but this is what I can think of, Then there are several thrill rides u can do on the strip like the roller coaster at NY-NY and at the sahara,then u can go down to the stratesphere and go to the top and there are several more rides up there. Since you are going for five days and its ur first time I would not worry about a rental car because u will be to occupied with the strip. There is alot more I could tell u but I don't have all night to set here and type away on the keyboard.. But u do want to start watching the airfare now and if you can get it for 400(for 2)roundtrip buy it quickly. and remember SWA doesnt charge for checked luggage.