It doesn't look like there will be any E-ride nights between now and Christmas week, so it's not just the parks staying open late. The parks, specifically the MK, are open later during the summer months, when most of the E-ride nights occur. During October and December, they do not have E-ride nights because of the other special hard ticket events, the Halloween and Christmas parties. The only reason I can see for not having them Christmas week is because of the possibility of cold weather. But, there's no way of telling.