Central 26 Aka renga festival question.

If anybody has been to this festival before.

I have work at 3pm on that day so i dont intend on buying a ticket. I only want to see Yoasobi's set. Does anybody know if i will be able to get close enough to see/hear them from the outside without buying a ticket? I know its a bit cheap of me to do this but i also dont have much money that i can afford to spend so i can't really afford to buy a ticket anyway.

Thanks for any advice/responses

by Tempacco94