perfectmansions
W:O:A Metalmaster
As far as I understand it, it's okay to bring glass bottles of spirits onto the camp site, whether it's in your car or in your luggage. After all, nothing is checked at that stage. The only problem I can see is if you were trying to make your way to one of the stages with a glass bottle in hand. But they do have bins right next to these checkpoints so that any offending items can be ditched.