| I'm probably being too "old school" here...but I think this needs to be looked at with caution. Have you talked to his doctor about any ideas to handle the 30 hour stretch? I hate to tell any child to "not do something" because they are diabetic. I really, really hate that personally. But a 30-hour fast (w/juice, I know) worries me. Not big worry, just on the edge of caution.
Same way I don't like it when non-diabetics fast for "diet" reasons.
Are they going to be dancing? Or just sitting around listening to IPODS? Try to envision what the 30 hours will really contain...also...will he have access to the juice at all times? | 
