Do you bring your laptop for a summer in the park? Yes (again, screw global warming). Getting online is usually an iffy affair. You should, however, keep a journal, and you will need the laptop as a platform for doing that.
These summer-in-the-park experiences (in whichever park) sometimes don't work out, but when they do, they can turn into the central adventure of your life so far, and maybe forever. You will kick yourself in the future for not writing down the details.