A:AnswerThe code is for Final Fantasy X-2 and the alternate ending cutscenes. If you go to the Nintendo Eshop and search for Final Fantasy X/ X-2 you'll be able to find the same thing as a free download if you already own the game
A:AnswerIf you have not yet tried contacting Square Enix customer support, that would be your best option. As long as you have proof of purchase they should be able to help you. Hope it works out!
A:AnswerThe first game FFX is on a cartridge. It is not clear yet if the US version has FFX2 on a cartridge or download code. It looks like a download code is likely as the European version has been explicitly stated FFX2 is a code only. The only for sure both games on cartridge version is the Asian area release, which does have an English option. Switch games are region free so if you want it all on cartrige you will have to import Asian area.