Yes! They are absolutely Necessary.
The 3D Goggles enable you to experience an immersive virtual experience. The goggles allow you to feel as though you are immersed in the video you're watching.
Here are a couple of our favourite VR Goggles! We have tested both and can assure you they're both fitting of the task. The cardboard work with both Apple and Android Phones - and are definitely a great price to to enter for the VR Goggle market for the first time! The VR Shinecon are fantastic as they've got headphones connected which help for a more immersive 3D virtual experience.
As we go, we will test out other VR goggles and toss them up here for your information.
See you at DYL-VR!