We traveled the Explorer of the Seas the first week of January with three generations. My husband and I, in our late 40's, two college aged teenagers, a 20 something and a four year old. Since we were traveling with quite an age spread, we chose one of the Voyager Class ships so that there would be plenty to keep everyone happy.
The ship was beautiful and meticulously clean each and every day. We had two connecting inside rooms on the 9th floor, and these rooms were TIGHT! Across the hall we had a larger balcony room, and that was much more comfortable. I was also impressed with the ease of getting around this ship. The last cruise we took, at the end of the week we were still trying to find our way around. This ship is very passenger friendly.
We spent a lot of time in the common area of the Promenade. It is a huge open area in the center of the ship that gives you the feel of walking down a city street. The children on board loved the self serve ice cream machine that was open certain hours every day.