A:AnswerNo, you do not need the wheel joy cons to play Mario Kart 8 Deluxe. You can pop in the game to the Switch console and play with the standard controllers provided.
A:AnswerYes, you can play this on an airplane but you can't do an online play obviously. The physical game is the version that comes in a physical SD card looking cartridge while digital is the version that you download from the Nintendo eStore, Digital game lives on the switch and is downloaded to the internal memory - I will suggest getting a high capacity micro SD card if you haven't already
A:AnswerYou need a copy of the game, physical or digital will both work for this. (I am actively doing online with a physical copy.) Please note that you ALSO need a Switch Online membership, which costs 20$ per year for one person, or 34$ per year for 2-8 people. You can also buy the online in 1, 3, and 6 month increments but it's cheaper to buy it by the year. It's worth it for the membership as you get to race against others, and many games including Animal Crossing also have online abilities through the Switch Online membership.
If you don't want online capabilities, you don't need the Switch Online membership, but to race others online at all you will need it.
A:AnswerYes and No. seperate the joy cons and play using one game and one switch system and a joy con each me and my daughter play it all the time. Use same screen . if you want to play on your own screens then yes you do
A:Answeryes this is compatible with switch lite. I bought this game for my son to play on his switch lite. Basically any nintendo switch game that has the "handheld" compatible mode is will play on the switch lite.
A:AnswerYes. We have both the switch and the switch lite. We play it on both. If you want to battle between devices you have to buy two of the same game.