Here's a thread on engraving from Cartier and my own personal experience as well as others. I have all 3 of my Loves engraved. Two of which were sent to NYC to engrave while another was custom made and engraved in France.
Your SA may be right about the emojis since it doesn't appear on that list; however, I recall they send it to NYC with what you request, and if they can't do it, then they won't so it doesn't hurt to try. Also, they ask you for several other options is what the After Sales Service rep requested from me for my engraving.
We had the head of my Wife's Clou engraved with a heart and the first letter of our last name. Understandably not from the Love collection but reposting since this is specifically a discussion on engraving. Clou 2 by avcbob posted Oct 27, 2016 at 11:15 PM I know this post is a year old, but...
forum.purseblog.com