Will I be safe for Plat border rewards?

I currently have the yellow triangle on top of my rank. I am Plat 5 0 LP and just got done with a horrible losing streak. My most recent game was on October 17th. Will I be able to avoid playing anymore ranked games to receive Plat rewards? And does anyone know exactly when the rewards get put onto your account? I just basically wanna know if I can take a hiatus and not face another game of ranked / decay with what's left of the season.