We did a back to back boarding on Aug 10th, 2014 These were our 29th & 30th cruises (24 on Princess) and the first on Celebrity. For those reading this review I will try to make a comparison. I'm sure others have different opinions but theses were our feelings.
Pros: 1) Beautiful ship -.loved the balcony flooring and the bathroom
2) Friendliest crew of any of our cruises - they all seemed happy ...