Can a child go to six flags without an adult

No must be accompanied by adult up to 17 years to 18 years old.

No

No they cannot

Insofar as being able to ride the attractions, so long as they meet the size and weight requirements they won't care But even with an adult, if they don't meet the requirements, the child isn't riding

You had better check website for policy. I wouldn't send anyone under driving age alone.

Depends on height. If they arent tall enough, then they wont be allowed on certain rides without an adult