Hi, thanks guys for the info.
I guess my main question was (I wasn't very clear), that since I won't be bringing a laptop (and my ipad is only 16GB), I was thinking of option 2 - the USB hard-drive - which would require access to a computer at motels and hotels to transfer data from the camera memory card.
So I was wondering if these (communal computers / 'business centres') are commonly available in motels and if they are expensive (or free?) to use?