One evening coming back to Chicago from a NWI adventure, Rene G wanted some Bells to take back. We hit every liquor store we saw from East Chicago, Hammond into Whiting without anything but the most basic selections. I would advise contacting Bells to learn their retail outlets in the NWI, then please post here.
We did visit Three Floyds brewery, which you need to get a map in advance of your trip. It is in the middle of a industrial park next to the Munster water tower. You will not casually bump into it.
FYI - I don't buy my gas at the stations immediately adjacent to the border. I take Indianapolis or Calumet a few miles in to find fuel prices as much as 20 cents per gallon lower.