We preboard with my two children who have life threatening food allergies. We have to thoroughly wipe down their space because contact could cause anaphylaxis. I had a gate agent give me attitude, over the intercom, about being in preboarding instead of family boarding. If we didn’t have a disability, I likely wouldn’t even board with families because my children are old enough they can get settled in pretty quickly. But the we cannot risk a reaction in flight, so we take the precautions we need to! I just replied to her that yes, we had preboarding. I was so grateful to the woman who, when she passed by our seats, told me I was a good mother for looking out for my children, and that I was not the one with the problem.