So, we were invited to a Quincenera (sp?) today and Im wondering if its safe to bring my almost 4…

So, we were invited to a Quincenera (sp?) today and Im wondering if its safe to bring my almost 4 month old baby there. 200+ people, some coming from Mexico and Idk about their vaccinations, I doubt they are all vaccinated. Is it safe? If he is in his stroller and car seat is covered? I wouldnt let anyone hold him.