The Premium Outlets are on Vineland Rd (not International Dr).
The Disney Character Warehouse outlet is still there. I was there a couple weeks ago and I can tell you its better stocked than it was a year previous, but probably not as good as a few years back. If you haven't been, don't expect anything on the scale of World of Disney. Its a relatively small outlet and is definitely hit or miss on finding things.
Honestly, the bus connections sound like a lot of trouble. It would be best if you had a car, and if not, I think you'd be best off with a taxi or Uber. The distance from the Disney Springs area to the Premium outlets isn't that far (no, not easily walkable), but time can be an issue, especially leaving the outlets to return to Disney (Vineland Rd can get quite backed up)