Huh! Yeah, they left out the 3 days of smoking mountain part. They portrayed it more as: Early afternoon: a bit of smoke and a little earthquaking. 5 PM: ashfall starts. Etc. (Which you know, 'cuz you've seen it.)

I was also interested looking at the Wikipedia entry for Pompeii that there's a fair amount of evidence that it happened in November rather than August 24th - which is plastered all over the exhibit, but maybe it's hard to update a traveling exhibit like that?