Stayed at the Silverton many years ago, they had a western-style outdoor steak buffet every Sunday that was cool. There was an off the strip casino(cannot remember the name) that everyone kept talking about their great buffet...went there once and paid for it(wasn't Vegas cheap) only to find out it was seafood day...I hate seafood.
Something tells me the days of under $5 steak and eggs and free (watered-down) drinks are looooong gone.
All the casinos were crap, compared to the early 90s which was the last time we went there (before 2022 and stayed several days). The Sahara , our hotel, didn’t even have free coffee. We went across the street to McDs and from there saw several of the events I mentioned. We went to maybe 4-5 casinos besides ours and they were all rip-offs.
ONE EXCEPTION.
We discovered a casino of the old style; You know cheap black jack tables, affordable good food, free drinks etc. it was Ellis Island. You have to drive to it though, maybe 30 min off the strip but well worth it.
Sounds like the Rio. I lived in Vegas for a couple of years in the early aughts and they were plasting ads everywhere about how great their buffer was. And, Friday night (I think it was), was seafood night. IIRC, back then, it was $35 a person for the seafood buffet.