Ok, I get your point about being DL REGULARS, however at WDW Everything is just a little Different and alot more s-p-e-a-d o-u-t. By many miles!! You will not be able to walk to Epcot from Any hotel. You will need a rent a car to drive the real roads to Epcot. Even if you were at Pop Century you would need a car or to ride one of WDW's Buses. Every Park is many many miles a part.
It maybe smart to start in Epcot, it is one of the larger Parks. Personally I have been to WDW 2 times once in Jan/Feb and one time at spring break both times we set a side 2 day just for Epcot and we have never made it all the way around Epcot nor have we seen it all.
Then too I think it may be very Christmas-fied. I think the Osborne Lights are there and they turn on at Dusk and everyone and their 2000 cousins will want to be there for that.
Go to your local Library pick up 2 or 3 of the Guide books. Study what rides are there that are must do's. Decide left, right, back or front. Decide if you are staying or hopping. Check Park Times Openings and Closing. Check to make sure if some of the Holiday stuff has Extra Admittance tickets or not. Because Magic Kingdoms Christmas Party Definitely Does!!!!!!
Oh!! At Christmas the Parks will shut there Gates if they are getting over Crowded. If are going to Ebcot stay in the Park till the bitter end and prepare to not leave for anything as you may not get back in!!! Carry a bag with pills, extra shoes, gloves, coats, treats, Sandwiches, soda, water, and clean dry sox.
Good Luck and Have Fun!!