Certainly. We've been hosting a black-tie NYE dinner party for more than twenty years. In recent years, some of our crowd have groaned a bit about putting on a dinner jacket, but standards must be maintained!
I'm disappointed to see that the new/old OCBDs (the $140 ones) are not included in the buy 4 for 40% off promotion. I typically stock up each year during the post-Christmas sale, but I'm not sure I will this year.
Don't be too disappointed. As Saint notes, it varies. Most of the times I've tried it, it was rejected as an "invalid code". But with this promotion, Yoox specifically stated that you could take advantage of the discount and use the code.