An update for anyone considering this....I ended up buying a mifi unit at mediamarkt and signed up to a monthly contract for 1gb of data. There's an easy website which allows me to add extra data when I'm over. (On milowi)
However, the reception is patchy (in Florida golf) and I seem to have to add a lot of data when I'm over .... So this isn't the ideal solution fir me. I think I'll need to bite the bullet and something more permenant.