Bridesmaids

Ultimately its your big day and its about making it as happy and as stress free as possible. Also remember that you and your partner will be your new family ask yourself if she will be supportive as a bridesmaid? the same with your dad, will he be supportive? or will it add more stress to your day? you deserve to enjoy your day without any issues etc. We know these are big decisions that need to be taken carefully but you need to weigh up all options - We are sure others have been in a similar situation and can offer more advice

As PP says, it's your day and you need to make sure that those in your bridal party are going to be supportive, not adding extra stress. Having said that, it can be hard to deal with family expectations.

Could you give your sister another role, such as being a witness or doing a reading? If you don't want her to have any role other than guest, then just tell her that she is already an important part of the wedding just by being your immediate family and that you also want to make x friend feel included so you are asking her to be bridesmaid. (Or if you don't want bridesmaids at all, just tell her you want to keep the wedding simple so you're not having a bridal party)

With the walk down the aisle, have you thought about what you will do if your father doesn't accompany you? You could ask your mother or another female relative and explain to your father that you want to do things non traditionally. Or walk down on your own or with your OH. These will probably be easier for your father to accept than if you ask another male relative to accompany you - but again, if that's what you really want, then do it and your dad will just have to accept it.

Wedding planning can be so political sometimes. Ultimately, it depends what you’re like as a person. If you can make a decision, stand your ground and stand by your decision then tell them how it is.
Although, some people don’t like truth and it may cause friction.

I had a similar issue with my H2B sister. She expected BM and to be honest, she was on the list before we went on holiday. After spending two weeks away with her, my mind changed. Her personality traits and attributes was not what I wanted near me on my wedding day. Although, that’s not saying I didn’t want her as a role somewhere to make her feel special. I opted for the “something blue”, to give her a role. And also she will be signing our papers x