I received both a card feat and a power feat after completing Cabin in the Snow.

 

Playing with Amiri and Lini.

 

Anyone else get this?

Yes, I had the same.

My party is Sajan, Kyra, Lini, Seelah, Amiri, Merisiel.

 

I'm aund bit afraid to play on and especially to finish the 6th adventure.

Yes, me too. And two of my characters change roles xD and lose power feats from old role (its crap). My Lem virtuoso becomes Sharlatan, Seoni becomes Celestial instead abbysial! Another 4 characters kept their roles and power feats.

Same here... which make me wonder if the Card feat we got is not the one we should get for completing the Adventure Path.

Same here, with Valeros and Lem in my case.