Hmmm... Chaparral Pro ?

edit: yeah actually on second thoughts, TheSerif is more like it...

PMN Caecilia probably.

Edit: I think it's TheSerif instead, probably the regular weight.

http://www.fontshop.com/fonts/singles/lucasfonts/theserif_plain/

The sans looks like Vista

http://www.emigre.com/fontpage.php?PVisOne.html

I've done some work for Sheraton and I can tell you it is their own custom font that is not publicly available.