Personally I would take as many days as I can get. My ideal during 'the non-Holiday seasons is to get in 5 full days and I would want at least one more day in December. The Holidays are an amazing time at Disneyland and there is a lot to take in that is specific to that time of the year. If you can swing it financially without breaking the bank I would recommend going for that extra day. How many days are you used to doing in February/March?
Thanks for the replies. We usually do 5 days and it has felt pretty perfect. My kids and I are huge on Christmas and disneyland, I'll probably be teary eyed half the time, lol. I was just concerned with 5 days being so perfect for us before, if 6 would be tiresome. Now after reading your replies I wish I could find a 7 day park hopper, lol!
Sherry- You're making me wish it was December already! I think I need to look at the big photo thread again.