It is worth it to take a taxi drive from the Copacabana or wherever you are staying to spend an evening at Rio Scenarium. It is a restaurant/nightclub/music venue and will be jumping late in to the night. The best bet is to book dinner here to get a guaranteed table for when the music really gets going. Ask to be on the main floor as there are also tables on balconies overlooking the stage and dance floor. They have a great view but if you want to dance you have to abandon your table and take the stairs.
The food here is solid Brazilian cuisine, a mix of beef/chicken and fish. A few options can be cobbled together for a vegetarian.
This is a must do for for the entertainment. The space is large and divided up into several separate clubs within a club. There will be a live band with a dance floor in the restaurant/club main area but there are also “side” rooms that act as almost completely different venues. The decor is crazy-like an entire wall of luggage or bicycle tires and the music is top notch.
We gained instant street cred with our concierge for knowing about this place.