So here's a serious (as in not facetious, not as in earth-shattering) question, perhaps for Flys320s: Service animals are allowed in the cabin by law. Say you have a blind passenger who has a seeing eye dog. Where does the dog lie? It can't be in the aisle, because that would block the refreshment cart. There isn't enough room in the [lack of] space where passengers are expected to cram their knees. Do people with service dogs automatically get a bulkhead seat?