Thanks. I've moved my appointment to 9 AM at ORD on June 6, but I'll keep checking to see if anything opens up at DFW for the morning of April 16 - and if nothing does, I'll try for a walk-in interview that morning as well. (I didn't know that a walk-in interview was even an option. Thanks!) I can book the ORD tickets in May after I get back from my upcoming trip easily enough. And either option seems less stressful than my original MIA interview, so it's a no-lose deal.