How did you manage support during the hackathon?

I liked that you mentioned that everyone had to contribute and no one got a "hall pass" to do real work, but I often need to manage our customer requests and it's difficult to say "I can't help you for 1-3 days because we're focusing on team building".

We do one of these quarterly and I'm trying to think how I can avoid being the worst hackweek teammate ever next time around. Maybe it is saying that we'll have limited availability for 1-3 days to some customers.