subproduct apparel variations

Hi,

I'm creating a site to sell tickets for attractions and am struggling to get to grips with the subproducts module.

Some attractions charge differently for the type of person the ticket is intended for, i.e. Adult, Child, Student.
Some attractions involve a coach journey with Single or Return tickets.
Other attractions have other variations.

I managed to get the site up and running but haven't worked out how to create the variations and assign them individually to an apparel product. For example:

A ticket to a museum has the Adult/Child variation