IAM a guest on somebody's account,now does he have to come with me or can I come by myself?

So every time we come in we have to sign in, there is no accounts..

You are not on anyone's account if you are received in as a visitor and will not be able to purchase until you are received in as a customer. Everyone that is in the building needs to be accounted for. You can come in on your own as a customer.

If you can prove You're 21 or older, u can go by yourself.

Just sign in and enjoy your shopping ! You don't need to be on anyone's account !