That's what I do!
I have a library card from my legal residence town. I just have to pop in once every 2 years to the library to renew it because the town library has a renewal system in place.
I don't use it for anything but ebook borrowing but I can access it from anywhere I have internet connection, reserve, borrow and search through something like 52,000 titles. They also have audiobooks and movies but I don't bother with them.
The settings can be adjusted on my account for either a 7 or 14 day borrowing period and I can borrow up to 10 books. I also can reserve books that are already out on loan and they'll notify me when it's my turn. I also keep a 'wish' list of what I'd like to read so that when I need reading material I don't have to go searching, although searching through the lists can be fun too.
I transfer them to my Sony Ereader but they can also be read directly on my laptop or on a tablet.
If you don't have a library card right now and are on the road, maybe you can borrow the use of one from a friend or the kid!! All you really need is the account code from an active card.