We went to the MVMCP and never saw Scrooge, not sure he is ever out, according to the spreadsheet of where to find the characters, he was not listed as being out anywhere. The time you are going, the MVMCP is over already. We are going down the 24th - 28th.
We didn't really see any characters out and about at the MVMCP we did get some quick pics of the Pooh characters but they were off to get ready for all the shows.