This is a solid choice for a buffet. It is on par with higher end Strip buffets for a much better price. It has its ups and downs like all buffets but it is typically high quality and busy. The line can be long to get in so plan ahead.
The only difference I've found between lunch and dinner is the prime rib. The lunch price is a much better deal if you can make it before 2:30pm. I didn't think the $40 for seafood weekends was worth it. It adds crab legs and oysters. I think the cocktail shrimp, mussels, clams and seafood Asian dishes are always available.