Caveat - this was a quick weekend two-day cruise so it's not the same as a longer cruise. But there were some issues that shouldn't have happened on any Celebrity cruise no matter what the length.
Pros - Infinity is due to be revolutionized this year. We were on Summit this year so it was interesting to compare the two. Even though Infinity is worn the public areas looked great. The ship was clean and I think in better shape than last spring when we were on Infinity.
The other passengers on this cruise were probably the nicest group of people that we have ever sailed with. Everyone we encountered was very polite and seemed happy. People sometimes call these short cruises "party cruises". We saw a lot of people drinking and having a good time, but did not see anyone getting out of hand or causing a scene.
6026 is a "sweet sixteen" cabin with the enlarged balcony. The Infinity is due for upgrades this year and this cabin is really showing wear. It was clean, but the bathroom tile is pretty grungy, there was a dark stain on the carpet, and the outdoor furniture needed to be replaced. The wooden bar above the bed (I think there used to be fabric hanging from those bars) was worn out, as were the chair legs on the chair. Everything just looked really tired. Also, we usually don't select a cabin that far aft. We had a rough first night at sea and you could really feel it in this cabin.