We were there Mon - Thurs and our friends were there Wed - Sun. The crowds weren't too bad at all. We did spend a few of the afternoons at DCA, though.
My friends said Fri & Sat were surprisingly empty - even had castmembers commenting on it!
It was a great time to go. The longest line we stood in was 30 minutes - the rest were all maybe 10 minutes, tops. Some things we walked right onto, like It's a Small World & Pirates!