Yeah typically the defendant they want to testify (often the lowest-level, least-responsible defendant) is charged first. In exchange for a deal, that person will provide as much evidence as possible against everyone else.

It is interesting that this firm has an "owner" rather than a CEO and a board. It's my impression that executives and board members would be less likely to face criminal charges in this sort of situation.

Schlitterbahn is a private family-run business.