Here are some additional greetings you might hear in Rio:
* "Bom dia!" (Good morning!) - used until noon
* "Boa tarde!" (Good afternoon!) - used from noon until sunset
* "Boa noite!" (Good evening!) - used from sunset until midnight
* "Tudo bem?" (Everything ok?) - a common way to ask "How are you?"
* "Tudo bom?" (Everything good?) - a more informal way to ask "How are you?"
Remember, "E aí?" is the most common and informal greeting you'll hear on the streets of Rio.