I remember being a small child (so like 50 years ago) and going to my Grandmother's house for Christmas. I can still see the huge real tree they had set up in the front room and gifts under it, but I really don't remember opening them. All my mother's siblings and their families and my great aunts would come for the meal. There was a huge dining room table, but so many of us that the kids all ate in the kitchen. I remember sleeping under the table with their dog. lol I do remember one gift. It was a metal semi pulling a trailer loaded with plastic farm animals. I loved that set. I believe it's still boxed up somewhere around here.
I don't know if any memory can be so great, as being a child at Christmas and having the good fortune to come from a good family. The decorations, food, gatherings, presents, family, thoughts of Santa coming, watching Christmas movies, etc. As adults I would recapture this if I could!
I guess the good part is that we were able to experience Christma's like the one you mentioned, Jacqui. We are extremely lucky for these good memories.