As for PaYa, it wasn't arranged - it was sudden! Aditya suddenly married Pankhuri by filling her
maang.
RuYal wasn't arranged either - Rubel fell in love with Payal, and when he took her to the restaurant Payal too was giving him signals (but she was doing this so that she couldn't distract him and meet Rohit). All in all, to Rubel it seemed like Payal was happy with this marriage too. So I wouldn't call it arranged.
Life for Kaira has been different. She weirdly fell in love with Manan when she didn't even know what love really is. She has been through all those goof ups, and betrayals that she now feels she needs a change; hence she is opting for an arranged marriage!
Since the beginning (when Avantika and Harish took Aditya to meet Pankhuri in Kullu), this is the second time I am witnessing an arranged marriage sort of background. It's a good feel.
I'll agree to one point, Rajshri Productions is going a little orthodox when it comes to PKDH. The orthodox feature is unique in PKDH; and that makes its USP!