If you're betting the under, don't be too quick to take the under 56 1/2 or even 57. I have just returned from my morning tour and I see 57 1/2 around town.
You know how it goes here in Vegas. When the tourists come in they usually push the totals higher. I will be heading out shortly to recheck and I wouldn't be surprised to see some totals above 57 1/2 here !