We were there accidently during MLK week this year and it was terrible! (We didn't even know it was MLK week until we were at WDW) We had the exact opposite experience of Mattsmom. Just a little example, wait times for its a small world were about 45 minutes to 1hour at 11am, Pirates was about a half hour, etc. We will NEVER go back during this time of year. A week before or a week after, but not that week.