Hi Cornelly,
Welcome to TLF. Have you had a look at the Istanbul forum yet? Lots of information on there. I plan to go there next May for the first time. There was a recent post by Mirraz about New Years Eve (31st December) in Istanbul. I think there was a reply by Chatty Cath which was very informative on location in relation to the sights. Anyway have a nose around for ideas. Best of luck, Carol