MIL problem 😩

I’m going for a short holiday with my parents together with my husband and baby next year. My father wanted to go alone with my mum but they doesn’t know how to book a cab, read the signs etc and so I decided to tag along with them. My husband will bring us around during the trip. While planning, my husband mentioned that his mother might want to tag along! (It will be my worst nightmare and he knows it!) I explained to him that I just want to spend time with my parents and we can go with his family the next time. I did share this issue to my mother and she thinks it’s not a good idea as well and my dad will not like it. Anyway, we told my mil that we will be travelling with my parents yesterday. She mentioned that her siblings are also thinking of going to that country in that particular period 😱 she also asked why didn’t we asked her to go as well (which we kinda skipped that question when she asked) Now she is planning a trip there with her relatives and siblings during the period to the SAME COUNTRY! 😩😩😩 my husband even sent our hotel itinerary to them. I’m sure they will want to meet up with us during that trip. My mum joked and asked me if we can travel to another country instead. I’m fine with travelling with my mil one day (😞）BUT definitely not with my parents. Thinking about this trip gives me anxiety. If I know this might happen, I will rather my parents go with someone else and I’ll stay in Singapore 🙃 Just…. Leave me alone 🥺🥺