Welcome Tour Requires $95 of Accessories and a 4K TV for 100% Completion:
Quote Originally Posted by IGN
Three mini-games require specific equipment, fans now report, with a camera needed to play 1 minigame, a controller with GL/GR buttons for another minigame, and a 4K-supported screen needed for 1 minigame and a separate tech demo.

These experiences are skippable, and the game actually tells you a cheat code to move past them so your progress further through the game isn't blocked. But using this method only gives you a silver medal for skipped experiences rather than the game's top-tier gold award — and, of course, you miss out on actually playing whatever you've skipped. So again, to play everything and get 100% with gold medals you do need the accessories.

This means Switch 2 Welcome Tour owners who want to see absolutely everything will not only need to pay up the $10 cost of the game, but also $54.99 for a Switch 2 Camera, and either $39.99 for a Charging Grip or $84.99 for a Nintendo Switch 2 Pro Controller to use those GL/GR buttons.

One useful PSA here is that the Switch 2 does support third-party cameras — so you could get hold of a USB-C webcam for cheaper.

But while the Switch 2 does also support the Switch 1 Pro Controller, this does not have the necessary GL/GR buttons — so you really will need to fork out separately for those.