I love Eden for giving away free gifts, but the code stopped me from adding mine to my order this past time because I couldn't use it and my coupon code both.
I don't remember exactly, but I think it was that if I put the gift code in, the coupon code was using got canceled. When I tried to reapply the coupon, the gift vibe was then treated like just another item in my cart, no longer free but only on sale. The coupon was clearly more important coz otherwise I couldn't afford the order, so the gift got left behind. Can't complain because I think it's awesome the EF offers gifts AND discounts, but yeah the code bit was an issue.