1. Ask for help
There is a steep ladder that you climb down to get into the Volcano and back up. The one going up is scary as it's covered in mud from everyone going up and quite slippery. I didn't feel comfortable carrying Jordyn down or up on my own so my dad did. However the employees are quite helpful and used to going up and down and will help you with your child if you need it. While I was there I saw them bringing a little boy around 4 up and down for his mother.
2. Don't wear a one-piece
The mud is sticky and gets everywhere! I am so glad I wore a 2 piece as it was easier to get cleaned up afterwards by the women down at the lake. Even in my two piece when I fully undressed to shower back at my Airbnb there was a lot of mud in by bikini and I couldn't imagine what it would be like if I have on a one piece.
3. Bring small change
If you get a massage while down in the Volcano or get washed off by the women by the lake small change is a must. They do not offer change (yes even with everyone else paying them in small change), so be sure to have this or be prepared to leave an extra large tip.