We were there last year from the Sat before to the Sat after. Crowds on Sat - Tues were not bad at all. Wed was a quite a bit busier, and after that, were down right horrific. We knew they would get bad as the week went on, so we planned all of our heavy park time for the days before, and had only specific things to do on the days after. For example, the Friday after was the first night for CP, so we did Epcot on that day and had ADR's for dinner at Le Cellier. Wed night was the first night for the Osborne Lights at MGM, so we did those on that night.