In my experience as reasonable high time S.L.F. Most pax ignore safety announcements especially the pre recorded ones. My last flight a quick look round showed approx 10-15% actually looking at the screens. So not a lot of hope there.
Of course. I didn't mean the pre-recorded routines. I meant during whatever time (if) you have between an evac ordered and the actual evac start.
On a lighter note, PAX sure are surprisingly rational sometimes: On the Hudson river ditching incident I don't remember too many bags on the wings. Maybe PAX decided their bags would be safer in the dry cabins than out in the Hudson.