Travelling in Galicia by car might be the best option as the train service can suffer from delays and the choice of times are not the best. Also the price of renting a car will work out cheaper in the long run. In the case of air travel, Galicia has three international airports, thereby making air travel easier for tourists from abroad.
If you like food, you have visited the right place. Abundant in sea food delicacies, its highlight is that almost half the mussels in the world are 'harvested' in Galicia. Popular dishes are Empanada, Polvo à feira, Caldo galego, Bacallau ao alvariño and Churros.
For the believer in a glass of beer, Galicia is mainly a wine region and a paradise for wine lovers. Though, if you like something strong, then there is, Licor Café and Queimada. However, beware, because for some, Licor Café can cause problems.
Galicia is a safe place to stay. Just to stay on the safer side, protect yourself in big cities. Of all cities Vigo and the capital - Santiago de Compostela - are probably the safest.
Drug trafficking and drug-related activities and crime are not uncommon. Though for tourists, this will not create a problem. In case of emergency dial 112 (ambulance, fire brigade and police).