Is the negative of the wedding photo a CD?

Generally, the photo studio will help you burn the negatives into digital discs, but the digital discs are the same as those copied from your hard disk. You can operate them one by one, instead of playing them directly like a DVD. You can also directly request to copy to the hard disk. For the sake of safety, some large photo studios are not allowed to directly connect external USB devices to give you CDs. Actually, the discs are the same. Back them up when you come back.