The first and most important tip is choosing a suitable camping tent that can handle the heat of the summer. In most cases, a 2-season tent is a preferred choice since it is suitable for hot weather.
In addition, make sure you choose a bigger tent. A 4 person tent is considered a better option for your family since it allows for excellent airflow. Even if there are two persons sleeping inside, getting a spacious tent makes it feel like having an air conditioner.