My DD (who is not AS-ish at all) is a kid I'd describe as slow to warm to new situations, which often comes out as "has trouble with transitions." "Has low tolerance for expectations mismatch" is likely the real issue.
She is the best travel companion ever, and is totally unfazed by the vagaries of airline travel. I think it's that she makes no attempt to guess what the travel experience will be like, so has few expectations to be mismatched.
"I'm not sure you and I will be sitting next to each other on the plane" does not faze her. Grandpa (an authorized pickup person) picking her up from school when she thought it would be me created a tantrum of such proportions that the school declined to release her to him, and kept both of them in the office until they could get me on the phone.
