Leslie, We are considering George for transfer from airport to our hotel as we arrive at 4 am. As for sightseeing if you use him does he just drive you about or does the driver actually give you a tour? Also we are staying at the Marriot, has anyone stayed there? If so how was it? I hope to see the Dervishes in Istanbul! We have twin seven year old boys and that is one of my pet names for them it would be interesting to see how they match up to the real thing!!! thanks for your post!