Through the Walmart app on my android phone, I can scan the receipt barcode and any movie I buy will be loaded in Vudu automatically. I haven’t tried it with a new release BR. That may be why the Walmart exclusive doesn’t have a separate code. Might be worth a try.
For The Last Jedi, the only place I could find the BR+DVD+Digital was from the Disney movie club. So I got Solo there as well.