Antalya works well as a family destination — warm water, sandy beaches around Lara and Belek, and a manageable airport-to-resort distance for most of the main areas. The part that takes more planning is pacing the days so they work for everyone in the group, not just the adults.
A private vehicle makes a bigger difference with children than with any other type of traveler. Waiting around for a shared shuttle or group tour bus is manageable for adults and genuinely difficult with young kids, especially around nap times or after a long travel day. Being able to leave when your family is actually ready, and turn a two-hour outing into ninety minutes if patience runs out, tends to matter more than the destination itself.
When it comes to activities, mixing structured outings with genuinely unstructured beach or pool time usually works better than a packed sightseeing schedule. A single well-chosen outing — a boat day with a shallow, calm swimming stop, or a short, easy walk somewhere scenic rather than a long hike — tends to go over better than trying to fit in several sites in one day.
Ages matter more than most other factors when planning specific activities. A private tour or boat day can be adjusted for a group with toddlers (shorter stops, easier terrain, earlier timing to avoid peak heat) in a way that a fixed group tour usually can't be, since the group tour's schedule is the same regardless of who's on it.
Finally, it's worth arranging airport transfers with the right vehicle and any car seats confirmed in advance, since sorting that out after a long flight with tired children is exactly the kind of friction a family trip benefits most from avoiding.