The Elephant Poo Poo Paper Park is a little ways out of town, so you should bring snacks and water with you. Grab, Thailand's version of Uber, is the easiest way to get there, so ensure you have the Grab app downloaded on your phone ahead of time.
Traffic can be busy around Chiang Mai. Make sure you're always walking on the sidewalks when available, and hold onto your little ones' hands. It's also worth warning them about the importance of staying right beside you, on the side that's furthest away from traffic.
It can get hot midday, so it's best to start the day with a visit to the Elephant Poo Poo Paper Park earlier in the morning. The ideal time to go is between 9 a.m. and 10 a.m. (It opens at 9 a.m.)
Thailand can get very hot, humid and rainy in the summer. Also, the pollution can be quite bad in March and April due to the farmers burning the fields. The best time to visit is in the fall, from October to February.
A Grab car is the most convenient way to get around Thailand with young kids, and it's also cheaper than haggling over a taxi. Download the Grab app before your visit and buy a cheap local SIM card so you can use the app during your travels.