I advise at a year-old chapter, on a campus with a thriving but fairly new Greek system. The members just love hearing about old traditions, and we recently discussed candlelights (which they do, but just for engagements). They had no idea about lavaliering and pinning, and they just loooovved the whole idea. I'm all in favor of keeping some of these sweet, old traditions.
If hints don't work, you can always ask for a lavalier AFTER you're married, too.
