I need opinions please!
Context: My partner and I are getting married next year, at a venue that comes with accommodation for 20 people so my fiancé and I are staying there with the bridal party/groomsmen and partners. I'm foreign and my mother tongue isn't English, my entire bridal party (6 girls in total) are from my home country because we've known each other for over 20 years and I still consider to be my closest friends. Our ceremony will be at 1 and we're due to start hair and makeup at 7.
Right then, a few months ago, my future mother-in-law calls me, we have a bit of a chat, and as we were about to hang up, she says that it'd be great if her and her daughter (my fiancé's sister) could be added onto the hair and make up in the morning. Apparently, it would be so much easier for them, that way they wouldn't have to try and find someone in an area they're not familiar with. I was caught off guard so I just said "Sure, no probs" and then had a mini meltdown as soon as I hung up. I got in touch with my MUA who said that we could add two people but would need to start at 6 and my hairdresser said it'd be fine, she can get someone to come with her and not to worry. So technically, crisis averted, all can easily be fixed. I initially thought FMIL and FSIL could get their hair and makeup done first, so they can get out of the way before we all start getting ready but they're not staying on site so I don't want to risk them arriving late and it having a knock-down effect on the whole prep. My fiancé suggested they could just come late morning, already in their outfit, and just hang out at the venue until 1 but I think that's a terrible idea. It probably means that his dad, brother and brother-in-law would come too (they're staying at the same accommodation) and I don't want it to become a family hang out. The venue is dry hire, so it's likely my fiancé and his groomsmen will have a few things to supervise in the morning and I don't know, I feel like his family coming to hang out is going to change the dynamic?
I wanted to spend the morning with my girls, listening to the music we grew up with, walking down memory lane, talking in my mother tongue and not having to worry about whether or not people can understand us or feel excluded... Just being comfortable. I do like my in-laws, but I'm not as comfortable with them as I am with my friends, you know? I also don't want them around for the first look with my bridesmaids and my dad and all of that, I'm sorry if it sounds harsh, but I don't think it's their place. I know I won't have the guts to be like "Right you're all dolled up, now please leave, we'll see you at the wedding" and knowing them, I know they'll probably want to stick around because they'll want to share the moment.
Now I'd love to know what your thoughts are... Am I being dramatic? Should I just suck it up? I was thinking of finding them a HMUA in the area and say that in the end, we thought it'd be easier for everyone if we booked someone just for them, that's going to come to their accommodation in the morning. I think it's a good idea because I would have made the effort of finding someone for them so it's not like I'm like "Right soz, I changed my mind, you're on your own." But then I don't want to offend anyone and I'm a bit lost.