Recife, Brazil + Add a trip

in the airport and in many shopping center (Shoppin Recife, Shopping Plaza, Shopping Tacaruna...)

That's correct. Also in some fastfood places like McDonalds you can also get free internet

and in some hotels, restaurants and hortels too

At the airport you can only access government websites, such as infraero, but not external ones. Same behavior as Guarulhos intl airport, in SP. You have free wifi internet in Shopping Recife (but only port 80 is opened), Parraxaxa restaurant (that I can remember now).