One other thing.
If you end up somewhere & you really love it, whatever you do, don't make that your career goal. I did work experience in an area that made me want to work nowhere but there. When I got there, I loved it, but realised I'd aimed too low. If you can, use your work experience to create contacts & ensure you keep in touch. If you wish to end up back in that area, it'll make it a hell of a lot easier for them to remember you. Be enthusiastic & willing to do any job that's offered. I've seen many kids come & go, and the ones that get the most out of their experience are the ones that are enthusiastic & willing to have a go. Believe me, you'll get a much better experience because the people showing you around respond to your enthusiasm.