Looking at Google Earth it would be +/- 1.8 miles to Target (Corner of Harbor/Chapman), BUT Food-4-Less (Grocery Store) is about +/- 1 mile, and it's at Katella/Euclid. HTH.
Catch the number 46 bus on Harbour, it stops right outside the DL entrance, get off at Chapman, the bus or the driver automatically tell you when its Chapman. Bus stop right outside Target for the return trip, they come every 15 minutes or so...
We always order from Albertsons.com. Never a problem there either. There IS the mini-mart across the street from PP also, but mainly chips and those types of foods.
ooops....forgot to ask if the monorail will be open. I know it was closed last year at this time but we are hoping to use it this trip. Can't find where on the website it would say if it was open.