If you have Haxchi you can use anything homebrew related just fine. Trying to boot the homebrew launcher or anything else through the web browser doesn't work.
Doubt it walmart has them already unless someone gets a disc copy of botw on wii u. It will not be leaked early even if you happened to have the title key. Nintendo won this one.
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi