From all the cities written on the T-Shirt, Vienna is the nearest one for me. I don’t have any knowledge about suitable event locations in Vienna, but some months ago I visited an event held here:
Ottakringer is the largest brewery in Vienna. Their event location is directly within the premises of the brewery itself, which not only means that their entire range of products is available at each bar in every event hall, but also that they surely won’t run out of supplies. 
For me too. I hope I can join.
Wien- Hope I’ll be there too. No claims to any kind of competence at organizing festivities, however if there’s some way I might be helpful feel free to approach me.
Huge number of options in one of the worlds buzzing congress cities- might even use the Hofburg (former imperial residence).
Let’s stay realistic
Would the WUK be an option? That would be closer to the target group.
That was such genius level intervention in the functioning of the universe that I shall owe you beer until the end of time. Feel free to collect.
Could be an option. But as I guess the event is supposed to be more than 10 jerks assembling at some restaurant/café/winery(!), some event agency will take care of that.
I might be mistaken but Jolla’s budget is probably modest. The WUK has an event location for up to 550 people (standing), not sure if it’s an option but I’d feel like it would be a fitting place for Jolla. Same goes for the Ottakringer brewery.
Would be cool to join a few of them around. I’ll try to find some more travel money! 
Might as well get an olympic stadium just in case
Sargfabrik? A bit smaller… on the upside, it’s orange!
I will make the long trip if there is one held at Croke Park 
or just at The Black Forge…
Sargfabrik also offers a Sauna! Wonder how that could be included in the event.
Somewhat similar there’s also the Brotfabrik.
As a thought approach, is it Wien inviting the Jolla crew, (something like maybe Rathauskeller or one of the many Wineries); or should it have a finnish touch (Hemma Wien, or ask Ihana if they do catering).
First question in any case is the size of the event, are we talking about 50, 150, 350 or 800?
Almost completely unrelated, I’m utterly puzzled by the mix of local (Wien) and anglicised (Prague, Warsaw, Copenhagen) names on the Roadshow t-shirt
Or, you know to keep with the theme:
