Hi and welcome to the forum - I'm sure you will all have a great time in
Icmeler and come to love the place as much as the rest of us do!
I wouldn't worry too much about the sun - like you, I don't do all that well in it, but there are plenty of bars, cafes and restaurants where you can take a break in the shade, and the beach has plenty of parasols as well. Personally, I find the heat and sun in Turkey a lot easier to cope with than I have elsewhere, for some reason.