My requests were consistently turned down. That's one reason I just switched to American - they're stingier on upgrades, but once you get them you can use 'em on any fare. Delta's new policy is great if you fly on someone else's dime and don't care how many of their dimes you waste, but lousy for those of us who watch our, or our company's, money. (AA transfered me into Platinum AAdvantage. The double mileage credit, pre-boarding, special check-in lines, etc., started right away.)