On a recent 7-day vacation, shooting about 80-100 RAW+Basic JPEG pictures per day, I went through about 4.3 gig of pictures. And that was with a Nikon D40 (less megapixels than your camera). So, if you're going on a 16-day trip, 10 gig is cutting it close. I'd probably pick up an extra couple of cards and invest in some kind of portable media solution. While I don't have one, the Hyperdrive Space CPRich mentions looks quite good...