GalaxyGirl,
I think we all use internet when traveling, but using wifi is a bear. I tried it for years.
Yes there are plans that provide lots of wifi coverage, but it was never where I needed it then. I started tethering to phones years ago and never looked back. Sometimes, when I have about burned the month down, I will try wifi. We never use it for anything serious as it is difficult to make it secure.
There is actually a lot of free wifi available if you know where to look. All the fast food, stuff your face and even some real restaurants often have. You just never know until you search.
If you are going to run wifi to a computer, get an Alfa package. If you are going to try to run wifi at campgrounds, get a coloring book so you have something to do.
Matt