I work for a family business and do a thousand little jobs. How do I put that on a résumé?

[Nic]

I've worked on my family's farm essentially my entire life and have held the following positions:

Fruit stand sales manager
Xmas tree lot sales attendant
PR/Social Media/Marketing Manager
Farmer's market vendor
Produce delivery account manager
Tour Guide
Educational Speaker for children

...

How do I represent all this on a résumé and make it look like a rich, positive history of work (for one company) experience as opposed to a mishmash of informal and seemingly unrelated jobs?

How do I play up my experience while downplaying my lack of formal education in the field? (I went to a top-10 university, but majored in literature and languages as opposed to business, economics, etc.). Also, I'm only 22.

I'm going to be applying for a position as a paid intern and/or assistant at a well-known social media company, and I don't want to blow this opportunity because I didn't know how to describe my experience and skills in the correct way.

Thanks!