Preface
It was all planed.
The Marauders, (minus peter who's mother was taking him skiing) and Lily, Phoebe and Jemma were going to be spending Christmas at Potter Manor together.
James parents had sent him and Sirius a message through his owl two weeks before Christmas, asking them whether they wanted to invite their friends over to spend Christmas with them. Sirius being an adopted member of the Potter family, lived with James and was considered the Potters second son.
As soon as the boys had received the letter whilst sitting in the common room, they had started jumping on the tables in excitement.
It took Remus ten minutes to calm them down enough to get them to explain their sudden outbursts. And even then all they got was "Christmas house us friends wooooooo" it took another twenty minutes to get the full story.
It was decided straight away that they would all spend the Christmas week at James and Sirius's house, so it was only left for them to get permission off their parents.
Letters were sent out immediately, pleading with their parents for permission to spend Christmas at Potter Manor. Replies were quickly sent back. Remus was the first to get a reply, the next day at breakfast, the marauders celebratory dance was explosive (literally), Peter not one to dance decided instead to set off fireworks above the marauders heads adding to the chaotic scene.
Professor McGonagall had gone so red it looked like she was going to burst when Sirius started doing knee slides down the long wooden table, as part of his celebratory routine, knocking students food flying off in all directions.
Throughout the day Lily, Jemma and Phoebe all got letters back from their parents. Once everyone had gotten replies from their parents James wrote back to his own, telling them that everyone had accepted the offer, so he and Sirius would be having four friends over for Christmas.
His parents were familiar with all of the group, from days in the holidays when they would spend the day, and through the constant flurry of stories James and Sirius would relay to them whenever home from Hogwarts.
The girls were just as ecstatic as the boys at the prospect of Christmas together, however they were a bit more reserved with their celebrations. They waited until they had gotten to their dorm to let their excitement show, they didn't want the Marauders getting too big headed about the fact the girls enjoyed their company. They were hard enough to deal with as it was.