How do you get Internet acess in a field..no seriously ..no troll?!?

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I am asking if its at all possible to get acess to the Internet in the middle of a field or at least in rural areas ...as I'm going to go car boot hunting and want to be able to have web acess if I need to check if an item is collectible or any other details so I can collect items and store them for the future ...

I have an ipad but I've noticed even when I'm in a town it requires me to pay in order to do this as I can't steel nearby Internet as it usually requires a password

The car boots where I live are usually pretty rural and remote
So I'm wondering if its possible


Any help appreciated...many thanks