Some general tips for your trip to Natal. Upon arrival you will instantly notice that even on an international airport there are just a few people who speak English. Therefore it is useful to learn a little bit about the Portuguese language. With some phrases or words you will already be in favor and this will be appreciated by the Brazilian. A small travel book does wonders.
Another important point is ofcourse the time difference, 5 hours earlier in the summer and 4 hours in the winter compared with Norway. So if you are thinking at the end of the day to call home from Brazil you have a big chance that in Europe everybody is already sleeping. Keep this in mind.
The currency in Brazil is the real. The rate is currently about 3 real for 10 Norwegian krones. But this can sometimes change daily, so please always check the rates. Upon arrival at the airport you can change if you have just past customs a few meters. Exchange not too much and go the next day just somewhere using a payment card or a bank card for withdrawals from cash machines, then you will get the best rate.
The tap water is not potable in Brazil. There are everywhere in the supermarkets or other stores bottles of drinking water for sale, ranging from a bottle for R$ 1,00 up to 3 litre bottles. You can also buy chilled bottles in the supermarkets. A few ice cubes in your drink, however, is not a problem.
The voltage in Natal is 220 volts, there is another plug, so you have to use an adapter plug. The easiest way is to bring a power strip with you so you can connect multiple devices with one adapter plug.