I don't usually cancel but on the rare cases when I needed to I made sure I used the coupon BEFORE cancelling. How can they take it away if you already used it? Haven't done an Expedia BRG in months and it sounds like it's gotten very iffy but if cancelling was my goal I would make sure I do it AFTER coupon is used. Don't know if there are any problems with this approach now since it looks like they have changed all the rules.