I went with my mother in February 2004, the first week.
*We found the crowds to be wonderfully small.
*Wait times were short, and we rarely used Fast Passes.
*We easily got everything done we wanted to (four parks = three days), however, we were gone from early morning to late at night.
*Weather was beautiful during the day, but as soon as the sun set, we wanted our jackets. Most days we wore long pants and short sleeves. One day was really just very cold all day long!
*Remember, parks close much earlier.
*We had no rain while we were there.
*We really felt like it was a bit chilly to be swimming.
I have also stayed at the All Stars.
*The ground floor room we had was extremely musty-smelling (this was a different trip, over Labor Day weekend).
*I didn't have any complaints about anything else, however....
*Compared to Pop (also a value resort), where I stayed with Mom during the February trip, the Pop was much nicer, in my opinion. I liked the theming in the rooms better, everything was new and fresh, and I really liked the food court/shopping area. If I had to choose between an All-Stars and Pop Century....I would choose Pop Century, hands down.