For someone who has never attended a Do: What is a "Do"?
Just a meeting / gathering of forum users to meet each other and enjoy some time, eat good food, enjoy some beers, wine, whisky? And, perhaps, get to know some friendly people from anywhere?

If so: I am so very disappointed, that during this event, I might enjoy some Korean BBQ while being in South Korea myself.
OK, after writing this, I am not really disappointed but it might have been fun ... ;-)
See you guys next time.

PS: My grandfather worked as an engineer at THF for about 15 years until 1967 - please enjoy his home away from home, as he liked to call Tempelhof!