Future SIL bachelorette party

Invite who you want. I dont think its rude if you arent close at all.

Ask your FH how he feels about it. If you don't want her there, see if he thinks that will cause drama or not or if she would even want to be invited.

It is your wedding not everyone else. Pick who you want to be your bridesmaid and invite the people you want for your bachelorette party. Just because she is your FSIL doesn't mean you have to invite her.

For my wedding, I already told FH and his grandmother that I am going to have my sister as MOH, and 2 of my best friends as bridesmaids. His grandmother keep pushing me to have my FSIL as my bridesmaid. I kept telling her no. Like OP, I am not that close to my FSIL (8 year older) and hardly handout with her outside family events. There is no law that I have to ask her to be my bridesmaid and invite her to my bachelorette.

I'd say invite her. She may decline, but a little bit of grace may be good for your relationship

I'll offer the perspective of being a FSIL. When DH's sister got married last year, she did not ask me to be in the WP. Totally expected, because we weren't close and I know it costs money (bouquets, gifts, etc) to have a big BP. She lives states away, so it's not easy to hang out. However, I also wasn't initially invited to her bachelorette party. That kind of hurt, because it's one night and wasn't costing her anything. I wanted to celebrate her becoming my sister! I ended up getting an invite the morning of, but I didn't know to bring lingerie. It ended up fine (she was in my BP), but it was a little awkward.

I did not invite my future sister in laws to mine. We are not close, we see each other at holidays and that is it. I didn't even invite my future mother in law. I had my bridesmaids and my mom that was it.

We had such a fun time and it was an awesome way for my bridesmaids to bond. Then my shower was 2 weeks after my bachelorette party and all my girls were laughing and getting along. We had inside jokes from it and it just made it so much fun!

My fiance did not care that I didn't invite them he said they are invited to your shower and that is all that matters.

I wouldn't feel bad. If you're not close, she probably wouldn't wanna go anyway. I didn't invite my future SIL to anything (she's FH's SIL, married his brother) and I don't feel bad.