I chose Buzios because it was in Rio and I didn't feel like leaving the hotel and because they had a groupon. Laziness did not pay off.
First, this restaurant would have been a complete rip off without the groupon. 50% off but with an 18% gratuity for sub par service was still way too much to pay. The wait staff just seemed bored, or like they had somewhere better to be - almost annoyed to be dealing with people. We asked to substitute the coconut shrimp from an entree with something (anything!) else and you would have thought we asked the waiter to pay our bill.
The food was just ok. Correction, it was just ok for Red Lobster prices. The popcorn shrimp was surprisingly good, the calamari was awful, the salmon was acceptable and the garlic potatoes were good if you like lumps (I do). There was nothing special to justify the prices here. Had the service been amazing that may have balanced things out.
In short, you are close enough to the strip that if you are going to pay these prices you could be eating at a well reviewed nice restaurant - do that.