A:AnswerYes it does use wifi. You'll need to buy the Nintendo Online subscription if you want to play games online with people, such as Mario Kart 8, etc.
A:AnswerIt has 64 GB of internal storage which is double that of the original switch and switch lite. It does have a microSD card slot in the back which you can use to expand storage.
A:AnswerThis happened to me a few days ago! At the store I went to, they were NOT in their display case - I had to ask at checkout. I actually had to convince the lady there that you could NOT buy them online and that it DID say they had some in stock. Finally, she went and saw they had some stashed away near checkout!! ALWAYS ASK!!
A:AnswerYes for the times you’re using it away from your TV like perhaps on a plane. You can set up the OLED as a tabletop screen & use the controllers as your handheld part, or keep it intact & just use it like a big, clunky handheld. I use mine almost exclusively on the TV but it’s nice to have options, especially when the OLED doesn’t cost that much more & includes access to all the retro games, even as far back as Nintendo 64.