We thought we were seasoned cruisers this being our 6th cruise but some people were on their 50th+ with four booked for next year! The majority of people seemed to be in their 70s 80s and 90s (we are in our 50s and 60s), and I suppose in October this has to be expected. There were very few children and they were really well behaved even though there didn't seem a lot for them to do. Some very nice kids in their late teens tried their best to liven things up from time to time. They failed miserably - I bet they were glad to get off in Southampton.
The Eclipse is a big ship and seemed to us that it was built to get as many people on there as possible without it tipping over. The main area between Guest Relations and Shore Excursions seems to have accidentally doubled as an entertainment area in the evening - it was clearly not designed for this, but most people seem to gravitate there each evening which resulted in very few people being able to sit down. The Sky Lounge was a bit out of the way and very smoky but this had entertainment although again, not many seats. However we loved dressing up for dinner each evening - most people made an effort, long glitzy dresses were not just for the formal nights.
We were on deck 6 (room 6277) and had problems with the room being over the galley which, we were told, was because of various laws - had to be cleaned between the hours of 12am and some ungodly hour in the morning AND IT WAS NOISY - VERY VERY NOISY. Keep you awake noisy. Like someone banging on very loud oil drums noisy. We complained and they did take it seriously, but there was little they could do about it. There were only 3 nights out of the 16 when we weren't disturbed by it. They offered us 20% of the next cruise but we eventually settled for complimentary dinner with our friends in Murano restaurant which was very nice.
Bathroom nice size, room OK not much storage space. Some rooms very noisy including those over the galley on deck 6 and those under the gym on deck 11.