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Going to bed on Christmas Eve is always difficult when you're a kid, though I never remember staying up all night and not getting any sleep at all. There was always the Christmas Eve sleep paradox: you don't want to go to sleep because you're too excited, but you want to go to sleep because then the time will seem to pass more quickly. I usually ended up somewhere in between, staying up later than normal but going to sleep eventually, and of course needing to have an extra nap in the middle of the day on Christmas. Christmas in our house was generally very relaxed and unstructured, so that was never a problem.
Also, spare a thought for Priscilla's dog, who didn't get a wink of sleep either and stayed up the whole time with her. That's a loyal pet if I ever saw one.