You may have already been and come back but if not I wanted to say that’s a great place for a holiday . Worth taking a trip to the big park near Calis courthouse as it’s huge and beautifully laid out with lots to see and do there, and it’s free. Also take a water taxi from Calis by the bridge to Fethiye town and have a wander down the streets, and look in the many shops. Enjoy
Look at the reviews on TripAdvisor from people who have stayed there. Lots of information there.
This is what I did when we went to an all-inclusive hotel in Greece. You can refine the reviews so you'll see the ones relevant to a family group and ones from the same month of the year you're going.