We normally do MLK weekend (4 day weekend from my son's school). We did President's Day weekend one year. The issue that year, Mardi Gras overlapped President's Day weekend. Holy crowds batman! Personally I think MLK and President's day are probably about the same due to school breaks, you have to avoid Mardi Gras. If it overlaps President's Day, walk away, and look for a different time to go!