Another option is to simply upload the video to Youtube. If the band would like to keep it private, just upload it as "unlisted," and then send the link to the group of friends.
Advantages: assuming you have a way to upload to Youtube - essentially there is no cost, requires no additional equipment, and your friends can easily watch the video on computer, phone, or tv). Not to mention, if they wish to share the video, they don't have to have a DVD burner and blank DVDs, they just need to send their friend the link. Lastly - they can also easily post the Youtube link on their FB page.
Wait ... one other advantage - DVDs and standard definition. If you upload to Youtube, you can keep the original resolution (I assume it's HD or 4K).