Arrive in Phuket and check in to a comfortable family-friendly resort such as the Centara Grand Beach Resort, which offers great facilities for children and adults alike.
Spend the morning at the Phuket Elephant Sanctuary, where the family can observe rescued elephants in a natural environment and learn about ethical elephant tourism (open 9 AM–4 PM).
Take a family-friendly Four Islands tour by speedboat to visit Phra Nang Cave Beach, Chicken Island, Tup Island, and Poda Island. Tours typically run 8:30 AM to 3:30 PM.