« on: January 12, 2015, 02:01:42 PM »
I was in a similar situation a few month ago - only limited capacity and no chance to take a laptop with me. Finally I tested a few possibilities and found one which fits best my idea to backup images.
My own solution in force is that I use my 5DIII and/or 7D plus a Samsung Tablet Pro 10.1 (SM-T520) in combination with two 64 USB Sticks. Workflow is to copy my CF card images via a samsung USB to micro USB cable in combination with my Hama 5-1 CF card reader to the tablet (tablet with micro sd of 64GB). As side remark, Hama plus USB to micro USB works fine in terms of power - tested a few times an no issue luckily. Afterwards I copied the images from the tablet to both USB sticks to have a three time backup. In regular cases 64Gb shall be enough for a regular holiday.
It's not the perfect solution, but from a weighting topic absolutely Ok.
Hope this helps and is another idea to follow up. In case you might need more information - drop me a feedback.