I will be traveling to Rio and staying in Copacabana for New Years (dec 30 to jan 3). Where do I start? Is there a main area to celebrate fireworks, etc.? I plan to do the touristy sightseeing stuff during the day. But is it safe to go to bars and clubs at night? Safety is a concern for me since I will be traveling alone. Please help me with suggestions if you can, thanks!