FYI, my experience ordering the tickets/class today, as the web site is a bit confusing...once you select which class, you are take to a screen to enter student's first names and ages, and adults first and last names. There is a section on terms above, and you had to click on the checkbox to say you understood them. But it wasn't clear to me if I needed to enter all our names, or just the child and chaparone. I entered them all.
On the next screen is another screen listing terms and another checkbox, but that screen was the most confusing - it didn't really tell me what I needed to do next, it only talked about needing a chaparone if...etc. Below there were four checkboxes, with each our names. I figured it must be asking me who is attending the class, so I selected DD#1. It rejected it because I needed to select an adult as well, and so I selected DW as well.
At that point I was taken to the actual ticket selection screen, where I could select any of the tickets, and a pulldown for how many. It did not differentiate adult from child, and I don't know if I needed to enter all our names in the earlier screen, but it let me pick 4 tickets, no problem.