We are going to Disneyland and Las Vegas the first two weeks of December 07. Could someone please tell me what the weather is like in both places and what are the crowds like at Disneyland in early December? We have an 8 year old and a 4 year old, will we need 3 or 4 days in Disneyland? Any suggestions on things to do in Anaheim and Vegas with kids would be appreciated. Many thanks!