Preparing for the workcamp

Little by little, my departure to the workcamp is approaching. I leave on Monday. It will be a long journey, to Argentina.
But now, I have to prepare everything I need.
The workcamp should be both reconstruction of a local plaza and social activities with local youth. The coordinators wrote the locals were anxious about seeing us - no surprise, such exotic strangers :-)
On the other hand, I'm a bit uneasy about artistic activities to improve local plaza - but I could teach them impro...or I can learn them some Czech songs :-)) not very plaza-related, but could be interesting...
I've never been out of Europe, so I'm a bit...a lot afraid.