Unless you want some time off from computer, take your laptop with you. It's still a lot easier than always going to a Internet Kiosk and can use it otherwise than just quickly uploading images off.
It depends on what you need it for. Think what you will be using it for--if it's just for simple email, slashdot-checking, or facebook, just bring a small device. You're a geek.. so what do you have? An iPod touch will do the trick--at the same times as a laptop-where there's a wi-fi signal (Okay, no ethernet). If you have an iPhone, then that works as well (watch out for charges). Of course, Verizon's CDMA-only phones don't work.
I would just keep the pictures on the card. When I went to Europe for 12 days over the past summer, I brought along my Nikon D40 with 2 8gb cards. I took somewhere around 4460 pictures and don't think I completely filled the first one (Normal Quality jpg).
So, maybe it's just because I have a 17-inch MBP so it's a pain to carry around, but I think you may be able to get by quite well without one. Enjoy the trip!