Overall a solid 11-day Baltic cruise where we made lots of good memories, with some minor quibbles. My main advice: DO NOT get a cabin on the Emerald Deck above the Princess Theater. You WILL hear bass rumbling through your cabin at midnight. Also, watch out for pickpockets, they struck twice during our trip!
SHIP
Regal Princess is beautiful. It's more low-key compared to Royal Caribbean's Allure of the Seas (which I had sailed on last year)-- there's no waterslides, mini-golf ranges, rock climbing, surf simulator, etc.
DO NOT get this cabin-- or any other cabins above the Princess Theater, unless you enjoy hearing pumping bass vibrating your cabin every night until 11PM or sometimes even until 12:30AM. I fall asleep easily anywhere but even here I had to wear earplugs to fall asleep.
We got switched to E721 (same category, near the stern) and it was MUCH better.
Otherwise the cabin was nicely furnished and larger than the average ship cabin.