A:AnswerI previously had Apple Music playlists before unsubscribing a few months ago. Just used my code for the free months, and they are all still there.
A:AnswerYou need to use the code to qualify for the promotion. If not you gotta accept the plans they offer and they will charge. If you use the code and then cancel your subscription, you won't be charged after the 6 months and you'll still be able to access your music till the 6 months
A:Answerafter you get the code, go to apple music and the settings. it should say redeem gift card or something along the lines. Plugin the code you got and you should get the promotion