I got married in
Icmeler in 2006 on a boat. I was living in Turkey at the time so I organised everything myself. It would probably be quite difficult to organise from the UK but if you were thinking of taking a holiday before the big day then I can give you some advice on where to get things from if you want. Just PM me and I will answer any questions as there is quite a bit involved in the legalaties too.
With regards to places where you can actually be married most restaurants and bars will do your wedding and wedding party for you if you know of somewhere that you would like, however most places are reluctant to do make it completely private unless you are willing to pay them quite a big fee.
Most of the big hotels, Aqua, Laguna and
Marti etc will let you hold it all there, as will some of the boat owners and most of the big tour operators offer services where they will do everything for you for a price, including all legal paperwork etc. Like I said any questions just PM and I'll do my best to help.
Leanne x