2 month old and restaurant

Hey y’all👋🏻

I have a TWO MONTH OLD daughter and I have so much anxiety about taking her out to a sit down restaurant. My grandmother is having a birthday dinner this weekend and I don’t know if I should take her. I mean, how exactly could I eat? What if she starts screaming-crying should I just pay & leave? Should I make her stay in the car seat? It seems so much easier just to stay home but I hate to miss family events. Any tips to make it less stressful?