One thing I love is variety. One thing you'll always find at the Red Rock Buffet is variety.
The Grand Cafe, Movie Theater and Buffet are the only things I like about the Red Rock Hotel (I hate that place, but that's a different story).
Out of all the buffets I've been to, this one and the Rio are the only two which have good sushi. Sushi is always lackluster in buffet settings, but at least here it's fresh most of the time and is at least somewhat comparable to the quality of an actual sushi bar.
The service can be a little snooty at times (the Red Rock is essentially a giant Strip wannabe), but they do their job by always providing your requests.
Dessert section=love. Cannoli, Cheesecake, Gelato and Tiramisu, hooray for diabetes.
The Red Rock is essentially in the middle of nowhere so I rarely ever come here, but I never regret the trek out here whenever I do.