Brian -- It's a lot easier to show you then to tell you.
This is a google map with walking directions from the main entrance plaza to your hotel. The route GM has put up is not the quickest way back, but the map will hopefully help with you orienting yourself (much more so than the ALA hotel map). Play with it as necessary to figure things out. If you zoom in and change to 45-degree satellite view, its not POV, but it does give a better sense of what you're looking at.
"A" is the main entrance to DCA. Straight up from there is the entrance to DL (the two entrances are about maybe 75 yards across from each other on the plaza). The sets of four white triangle you see to the right and left of the plaza are the ticket booths.
If you follow the GM routing (blue line) you see it following along "Downtown Drive." This isn't a road...this is the pedestrian walkway through downtown disney. Downtown Disney extends from the main entrance plaza to the DLH (which starts where it's marked as 'Goofy's Kitchen...downtown drive takes a sharp left there). When downtown disney hits West Ave/Disneyland Drive, it's basically a pedestrian overpass (the road goes down underneath the overpass so when you're walking through downtown disney, you have no idea you've just walked over a 4-lane road).
GCH is on the south side of downtown drive between the entrance plaza and West St/Disneyland Dr. IMO, the quickest way to get to your hotel is to cut through GCH (there is an entrance to the hotel off of downtown disney, then you can exit out the main entrance which is where the parking lot is in front of the hotel...the hotel entrance faces disneyland drive. then turn left on disneyland drive, walk down to katella and turn right on katella and walk to "B" which is your hotel.
I'm hoping it might be a little easy for you to envision if you put the map in satellite mode and zoom in so that you can see the walkways, sidewalks, etc.
So to describe it, the main entrance plaza has DL directly to the north, DCA directly to the south. From the entrance plaza, Downtown Disney heads more or less west and ends at the disneyland hotel. GCH is on the south side of downtown disney (if you think of DCA as a rectangle, then GCH takes up the upper-left corner of the rectangle).
After looking at the map, does that all make sense??