A:AnswerIf your looking for multiple people to play with one card, you need to look for the “family plan membership”. Otherwise you have to buy individual memberships.
Attached a photo of the family members. I believe it allows 6 people to sign up for just 1 card
A:AnswerUnfortunately you’re probably out of luck. You can see if whomever you bought it from would be willing to work with you but the code is on the actual card. So If it’s gone, you’ll need to get a new one.
A:AnswerYou’ll be able to play any story mode or campaign. As well as local multiplayer (all on one console). You’d need this to play online multiplayer.
A:AnswerNo, you only need this service to use online features of the game. Without this service you still have access to any game you purchase from any format.