Folks who ordered the CE version of TOR also get a holo twi'lek dancer :p
http://torwars.com/wp-content/uploads/2011/07/HoloDancer1-500x432.jpg)
Imagine the extremely obese stereotype Star Wars nerd out there...getting 'excited' about a bunch of pixels that is supposed to be a bunch of pixels showing a Twi'lek dancer. :xp:
OT:
In any case, I don't think RL events will ruin the SW experience. Even World of Warcraft tried to combine RL events with their own lore to some extend. Christmas was bad though...with raid bosses wearing christmas hats.
However, years pass in TOR. Iirc, there is a calendar similar to ours in the Old Republic at this point (looked it up, the time is ATC -after treaty of Coruscant, and a Coruscant year lasts 368 days), so hungover Sith Lords on January the first should be possible.
Christmas is more difficult though, considering the 'limbo' position of Life Day and the Holiday Special. This could be fixed in-game by making up an event though. Maybe Sith and Jedi sitting together at a battlefield during the war and enjoying a hot meal together and giving each other gifts (like in WW1).
I would loathe a quest where green wampa would steal christmas on Hoth...