Booked a trip to Vegas on a whim for my husbands birthday. We arrive Sunday and are staying at the MGM Grand. Neither of us have been to Las Vegas. After booking I start reading reviews on here about MGM and it seems like a bad decision. Complaints of wait times, smoke, noise, wifi not working and poor customer service. I know to take some reviews with a grain of salt, but now I am wondering if my lack of prior research is gonna bite me in the a$$. Aside from the worry of booking a bad hotel, I didn't book a rental car either with the thought of just being able to walk to places. Opinions on the rental car for three nights stay?