Birthday party question

I sent out an invite via text to family but I want to change the location for my daughter’s birthday. The one we have is more for adults but I saw another location that is much cheaper and more suited for kids. The party isn’t for another 2 months and I want to try and get the same date and time.

Do you think it is worth it or confusing? My husband says his family won’t care since it’s 2 months away. I didn’t pay the full price at this place yet and only paid a down payment of 150.

Now my sister in law mentioned ahe was thinking about having her babies birthday party at this place I want to have it at so I hope she won’t be mad. Should I ask her first?? We aren’t that close so I don’t want her to get annoyed