If I dont wish to play in certain games now, who do I tell?

Evo Championship Series
1

I dont expect any money back but I would like a refund if I could, anyway I dont really want to play all 5 games but only in 2 or maybe 3 games

So do I say it at Evo or can I speak to someone now

2

PM Mr.Wizard, Inkblot…or Ponder.

3

Thank you