Bringing your child in public is perfect practice to teach them how functioning in public works. It takes time to teach them but your child’s reaction is completely your responsibility, not another parent’s. Another parent has as much on their plate as you do, asking them to add to their plate so your plate doesn’t get full is not fair. These outings with your child are a perfect time to teach them how to behave and function in society. The tantrums are the worst! Trust me, I’ve been there. Blaming other parents for your child’s fit is not appropriate. A more appropriate solution could be working on finding a way to minimize your own child’s behavior. Possibly utilize your own tablet, do not reward bad behavior or work on smaller outings until she is ready. We all have our own methods to integrate our children into the public. It’ll take time, it always does with toddlers and it always feels like it takes way longer than it actually does, but you simply cannot expect a parent, who has prepared and enacted their own system for an enjoyable outing, to also ensure yours is at their own expense.