Mario kart wii supports gamecube controllers so you can just set up a GC controller in controller settings to play that.
Anyways, yes. You need an IR light bar to play most Wiimote required games. You don't need a dolphinbar if you already have a BT adapter, and something like this is much cheaper and gives you just the IR lights.
https://www.amazon.com/Nextronics-Sensor-Bar-USB-Emulator/dp/B001UAAX60
Anyways, yes. You need an IR light bar to play most Wiimote required games. You don't need a dolphinbar if you already have a BT adapter, and something like this is much cheaper and gives you just the IR lights.
https://www.amazon.com/Nextronics-Sensor-Bar-USB-Emulator/dp/B001UAAX60