I've actually been to this place quite a few times, but my last experience here was a good one. Not a big fan of the prices but everything in Vegas has gotten pricey these days for the most part.
Had prime rib and wine. Service was great. Food was very good. This is probably the best place to eat in the Rio Hotel at the moment, if you can afford it.
On previous experiences I have sent food back before, but anything I've sent back was replaced for free/comped. Not sure if that is a standard practice but they do seem to aim to please.
I just wish they were a little more affordable to us not so wealthy types.