You can only access WiFi by buying a Wifi card from the convenience stores and using the Wifi card code at local parks where there is a connection to Wifi. Check with your carrier what the roaming charges are before traveling if you decide to use your data plan! I got charged 25GBP for 1MB when I accidentally turned my phone on! To find my way around without Google Maps + data, I used the Triposo app, which I downloaded and put a lot of Paladors (private restaurants) on it so that we were always eating somewhere that had been vetted. You download the offline map, so your GPS will work and show you where you are even if you don't have cell service.