I cannot quite remember where I got this information... maybe from the Passporter book, but here goes....
Early Entry days are as follows (subject to change of course!)
Magic Kingdom - Thurs and Sun.
Epcot - Wed.
MGM Studios - Tues and Sat.
Animal King. - Mon and Fri.
Unless you are staying on site and planning to attend the Early Entry, avoid the parks on those days if possible (or so they say!). The days stated to GO TO the parks in the book are as follow:
Magic Kingdom - Fri and Wed.
MGM Studios - Thurs and Fri.
Epcot - Mon and Tues.
Animal King. - Tues, Thurs, and Sat.
As I stated, I got this information from a 2004 edition guide book, probably Passporter. I haven't tried it out, but we are also going in January (a bit later than you), and have scheduled our days according to this. I hope for both of our sakes it is true!
