It _is_ most relaxed to arrive on the Friday for sure....plenty of time to unload, set up the machines and in the evening.......we have a small pre-party at the bar.... 
Maybe I should bring my guitar and sing terribly off-key ?
You play the guitar...let me sing

We can have a campfire....there will be enough wood already

Seriously, we should think about doing that.....AND we can do it vice versa if you want to get rid of the people.....I'm afraid my guitar playing is much worse than your singing
