We are from Hong Kong and we cruised before on Princess and NCL America before. We are Chinese, I am 37, my wife is same age, my sister is 49 and my father is 73.
Well, this could get long so I will say it here, we really enjoyed this cruise. We loved the food, the ports and the staff were excellent. We do recommend this cruise to our friends.
The ship's shuttle buses were expensive though, but if you can find your own way to get around the ports (just do a little more research before you go) you should have no problem. For example, Celebrity charges US$100 per person for the transfer from Harwich to Heathrow. We spent just GBP21 each using train and tube. We had to haul our own luggage along but we were up to it so no problem.
The cabin is bigger than we had on Princess or NCL America. It is almost in the middle between the middle and aft lifts so very convenient. Location is quiet.