I went to see the Roxy Show and it was a really great performance. I purchased the show-only…read morepackage for R $396 with the welcome drink, so I can't comment on the food. The price was on the high end but I felt the quality of the show was commendable. Our seats were excellent although it was a smaller venue so any seat would be decent.
That said, the show itself was an impressive spectacle that takes you through Rio's main regions and traditions. The performers also had great interaction with the crowd, which made it a fun and memorable evening.
If you are looking for a fun evening in Rio and didn't come for Carnaval this is a great option!