We really did our research before our first trip to Vegas, so we knew we wanted to try the buffet at the Rio. I had no clue though that it would be one of the best meals I have ever had in my life. The Carnival World Buffet is the probably the greatest buffet in the world. How many places can you go and have pizza, freshly rolled sushi, gigantic crab legs, tacos, and burgers all in one meal? They have everything and it is all for an excellent price compared to other Vegas buffets. I definitely recommend trying to find coupons to stretch your dollar even more. For example, the last time I went, I found a coupon in one of those tourist magazines for a free steak cooked to order with your buffet. I thought that since I had a coupon it would be a little piece of meat, but I was pleasantly surprised when I got an excellent cut that had been cooked perfectly. Also if you go, make room for dessert! The fresh fruit chocolate cups and gelatto are almost worth the price of admission by themselves.