Some people (who celebrate Christmas) open their gifts on Christmas Eve and just leave the Santa gifts and stockings for Christmas morning. Some don’t open any gifts at all until Christmas morning. Some people open 1 gift on Christmas Eve and the rest on Christmas morning. (Some people don’t get any gifts at all to open – that must really suck.)
Shan normally got to open one gift – a new set of Christmas pajamas and had to wait for the rest until the morning. We used to open our gift exchange gift the night before and the rest in the morning. Sometimes, after getting back from midnight mass, since it was already Dec 25, we would open the rest and leave stockings for when we woke up.
With the kids, we usually do pjs the night before (which usually elicits the wails that all soft gifts deserve) and whatever their uncle gets them and leave the bulk until the morning.