Not been there but went to Yedi tepe in Turkey last year. We had a great time. The accomodation was basic, and we did have a problem with the a/c units leaking, but the staff were helpful and it was sorted out in the end.
The kids clubs were excellent. The club for the little ones was first rate, and they had lots of shaded and a/c room for the children to play in during the heat of the day, The staff were wonderful. Ds had a great time. Dd was 5, and didn't have such a good time. The clubs are centered on water based activity, and dd didn't like the speed boats, but the girls were very kind and tried to cheer her up.....not an easy task! The water in the pools could have been a little cleaner and she ended up with an outer ear infection....ear plugs to keep out the water would be a good idea if your children are prone to that sort of thing.
There are no child seats or back seat seat bets in Turkey, so you might was to take a front sling if you have little ones.
Other than that, can't think of anything. You'll have a great time.
Oh, and I don't 'do' sport! But dh loved the windsurfing and sailing. Sunsail are better for sailing than Mark Warner.