I don't understand opening presents on christmas eve.. it is all about waking up and opening the presents with a hot chocolate/coffee in your pajamas, nothings better haha..
Have started opening them when I get home at about 4 or 5am Xmas day, althoguh I am usually drunk, my sister and mother are up and about anyway. Get the best of both worlds, early presents and then sleep for the rest of the morning
when I was young we opened presents with my family on christmas eve, and santa came in the morning. Damn I used love that shit, I can't wait to have a kid and start doing that stuff.