There are many free Wifi spots everywhere. They let not only travelers but also anyone makes use of the internet.
Interestingly, Wifi is more developed in some developing countries than developed countries. In Japan, some hotels do not offer free Wifi. There were few stations letting passengers use the free internet. But the situation is getting better, perhaps expecting increased foreign travelers. In the UK, Wifi is not available in some rooms in traditional buildings whose wall is too thick.
Free Wifi spot is considered to be risky. You expose a risk of being hacked, according to some media. But is it correct? The answer depends on your lifestyle.
There are many points to make use of free Wifi with safe. This article below describes them in detail. The author recommends you first to assess your security level and the magnitude of necessity for Wifi. If you have no important information on your PC and the purpose of internet browsing is to check the weather, the security risk would be ignorable. In contrast, you have to carry much sensitive information, you should hesitate to connect to the internet via free Wifi.
The Guardian: Ask Jack: How can I use airport and hotel wifi safely?
Virtual VPN is also a protection against hackers. The date transporting from your PC via VPN is encrypted. But using a VPN is often costly.
The ultimate solution against hacking is using a vanilla PC, according to the author. But I think it is not realistic, even right. Bringing your own pocket Wifi is better.
After all, convenience, security, and cost are mutually trade-off, as the author says. Also, the battle between hackers and security specialists will never end.