This is the last ever two legged final and next year will be a one off game in a neutral venue (Santiago, Chile).
It will be interesting to see if away fans are allowed at either game as they aren't in the domestic league (due to crowd troubles including deaths).
I ticket la Bombanera off my bucket list in March this year, but Boca were playing Talleres and a Boca v River derby would be another level. I suspect tickets for either game would cost more than the plane tickets to get there though. It will be some atmosphere though!