Embarkation with Princess is the best. Remember to go on the regular line, not the express (two people work the regular lines!). Getting off the boat is just as easy, and you can find the customs people will look the other way if you are just a wee bit over on your purchases.
The public rooms are basically a disaster, especially Club Fusion, which is a revamping of the Vista Lounges from the other ships. 25% more people and the same sized rooms (except the casino...venue producer that it is!) means trouble. We had to stand for a show in the Explorer's lounge, now the secondary showroom. Club Fusion is beset by HORRIBLE sight lines (they used over 2 dozen flat screen TVs to try and fix this...but why should you watch a TV when you want to see it!!!. They should reconfigure that first thing in dry dock...blow it up would be more like it!
The cabin was wonderful save for the balcony where everyone else on your side could look (we were on the outermost balcony). Some Einsteins decided to feed seagulls in St Thomas with the expected disastrous results.