Multiple event registration system - Best approach?

Hi, hoping this is the right way and place to ask this.

I am hoping to set up event registration system using Drupal Commerce which looks to be an awesome e-commerce system.

I have looked at a few ways to do this but so far come a bit unstuck. Probably because I am still getting my head around how DC all works.

I have no problem setting up a product as an event and creating a display and even adding some additional attributes. What I am stuck with is how to have a group of events available together with one add to cart. Product bundle doesn't quite fit this case.

Ideally I would like the customer to be able to enter the registration details and select the total number of events they want to go to in one form.

Eg a Football sports camp where they could choose to sign up for Week 1 and Week 2 by checking both select boxes and have this update the cart to include the price of both events rather than only one be available to select through the select list.

The website is for a kids sports company with multiple sports available over a number of weeks. What they want I think is for parents to sign up their child for several camps in a single form. Similar to this example here. http://www.shinesportscoaching.com/

Just a bit stuck as to best way to do this.

Any help/suggestions/advice would be appreciated.

Fiona