Terry.....euro is right regarding connectivety.
With regard to WiFi access it depends on the strength of the signal being transmitted from the WiFi host hub. I visited a very large campsite in Spain earlier this year and could get excellent access over 300 yds from the hub but it all depends on line of site and obvious obstructions that all weaken the signal.
Usually the connectivety window on your laptop will tell you whether the signal is excellent or weak. If it is weak it has a habit of disconecting which is tiresome. It will also tell you what WiFi connections are in range of your computer, some may be secure (needs a password to connect) and some may be unsecured, which means you can usually access these for free.
But remember, if you use unsecured access it is best not to do anything that requires any of your own secure personal passwords, eg bank accounts, etc because as it is an unsecurred network there is a chance others may obtain access to your info while you are on line. This is also important if you use a shared computer in an internet cafe, always clear down any information before you log off.
Don't be alarmed by what I said in my last paragraph, just be careful...Mal