The 3rd & 4th will probably be a lot less crowded than the 27th (that week was busy), but you still may run into some crowds.
Schools start up again on the 7th & there may still be some holdovers from all the Rose Bowl / Rose parade tourist for this week.
Monday the 7th is actually when things get back to normal, even slow. (the park hours change I think)
Walt Disney World's Magic Kingdom
Disney's Animal Kingdom
Disney's Hollywood Studios
Disney California Adventure
Universal's Islands of Adventure
Universal Studios Florida
Universal Studios Hollywood