This was probably our once in a lifetime United Kingdom cruise -- 7 ports in 10 days -- England, Ireland, Northern Ireland, Scotland, and Wales. From the British Museum in London to war museums and, oh so many, castles, the overall trip ticked many boxes. Because this trip was port heavy, time and experience on the ship were more limited than usual. But, this was our 3rd trip on the Regal Princess out of 14 total Princess cruises.
Note that my rating of 3 for the cruise does not include the stay in London or the amazing tours (yes, some better than others depending on the guide).
I am in my mid 50's and my spouse in late 60's. Though mobile, we do have some health challenges that make traversing such a large ship somewhat difficult. With that in mind, we knew that most of what we enjoy on this ship is mid-ship to aft, so we chose our cabin accordingly.