Blue Nile - Shipping Question

How good is Blue Nile about their 'estimated arrival dates' - ?

What I bought is being shipped overnight, but they say it'll be here Friday (i.e. will ship Thursday). Are they usually accurate? I don't care if it gets here early - it just can't be late!

Thanks!

Yes, thanks! It's being shipped to work, actually, so it can be signed for.

Thanks - that's the answer I was hoping for!