Thanks for the first-hand report. That's some great customer service by the National crew in BOS--they, of course, didn't have to do that for you. When I travel with my family and NEED a minivan or big SUV, I always chicken out and book that vehicle type specifically rather than stressing out hoping one will be on the executive aisle or that, as luckily happened to you, the staff will help me out. Maybe I'll start booking a mid-size (obviously at a MUCH lower rate), if National is going to come through like that!