Thanks for the tip In2Photos. I do have a 430EX flash but unfortunately the batteries were dead and I did not had time to recharge them. Anyways I amo not sure even if bouncing the light from the ceiling would have mess up the lights on the tree.
So without flash I think my best bet was taking the shot at full aperture f1.2 and ISO 3200, going at 1/200 even if the shot was a bit under exposed. Any opinions on this setting?
And yes, a lot of pics came blurred because of movement of the subject, I left the third pic just cause I like it..hehehe...
PS: I am not sure if there is a school to teach how to decorate a tree but I surely like the way my wife does it. I think is just a way to bribe me to get her expensive Xmas gifts; but that is only a guess