From memory Kacey mutters "What are you doing, I don't do that" a couple times. So the submission sans protest you're looking for goes by the wayside.

Aurora Snow is in this because in her previous Gangbang Girl they brought in Kami to do the Anal Aurora wouldn't do, she's auditioning to make up for it, by doing Double Anal to prove how tough she is.

As I recall Catalina has her enhanced breasts and jumps into the frey like a crazed nymphomaniac who's been denied too long.