no
Actually, Baby Mario has 6 karts (if you can unlock them) in Mario Kart Wii. He has the Standard Kart S, Baby Booster, Concerto, Cheep Charger, Rally Romper, and Blue Falcon. For the 6 bikes, he has the Standard Bike S, Bullet Bike, Nanobike, Quacker, Magikruiser, and Bubble Bike.
Play a Mario Kart game that has the track Yoshi Valley in it, or build your own Mario Kart
No.
It's your choice. I would choose Mario Kart in my own opinion.
buttface
Baby Luigi, Baby Mario, Baby Peach, Toad, Toadette, Dry Bones, Mario, Luigi, Peach, Baby Daisy, Daisy, Baby Bowser, Bowser, Rosilina, Bone Bowser, Birdo, Yoshi, Donkey Kong, Wario, Waluigi, Funky Kong, Kuppa Troopa, King Boo, and you can use your own Mii's.
Shy Guy is a Mario Kart DS download character. If you want to choose a different character, then I suggest you buy another Mario Kart DS game.
No, Mario Kart 64 isn't available for DSiWare. It is, however, available for the Wii's Virtual Console.
You can't cheat. But here is some advice. If you own Super Mario Galaxy .... at least make it to where you meet Rosolina. Then, go on to Mario kart.... click on a licence and if you did it right, Rosolina will appear.
Mario party? or maby diddy kong racing
INFO: I tried playing with my brother (we both own Mario Kart DS, I have Action Replay). I could launch items and stuff on my screen, but on my brother's screen nothing happened.
Yes, you cannot make your own tracks on Mario Kart Wii without hacking. Doing so requires the use of homebrew for the Wii.