Who should go to my anatomy scan?🤦 Delima

I will be having one next Monday am very excited! I miss seeing my little jalapeno 😂 and wondering if it be a she or a he. Let's cut to the case I am only allowed 1 person in but, they pushed it to 2 people. I want my parents to be there my dad will be deploying back to afganistan in January so he mostly won't be there for the birth of his grandchild as my mom will be there during birth. My mom didn't see the first ultrasound and I have a feeling she does and my older sister didn't have anyone coming to hers because she lived in Texas alone with no family or friends just her fiance. My parents suggested to take her since she wants to be involved with my pregnancy and to also make her feel important. If I don't than that would push her away or give her a clue ( she asked me excitedly to go to the appointment). Idk what to do guys🤦 I want my parents to be there but, my parents seems to be right..