I think I am struggling with the balance of "yours" and "mine".
We are a family of 7, but only 1 child is mine.
When step children arrive, my house rules go out of the window and a new set have to be applied. To be fair, this is probably because it is virtually impossible to parent 5 children in the same way you do with 1. You simply do not have enough hours in the day to give the attention to discipline, homework, manners etc.
Just wondered if other people in the same position as me feel the same way or if you look forward to being a big, happy, noisy bunch and dislike the quiet than ensues the moment the step children go back to the RP.