We haven't taken one of these cruises yet, but if Celebrity offers one on the West Coast during the summer (MID-July or later), we'll book it pronto! We'd love a Christmas or Thanksgiving cruise that isn't filled to the brim with children, too.
We've done two of the Escape cruises and love them. The last was the Mexican Riviera out of San Diego for New Years. Since we always book cruises at times when there will be few children onboard, this was a great opportunity to do a holiday sailing.