This might have been suggested before, so shoot it down if it has...
While some bring their laptop or tablet to Eurofurence, many of us do not, or don't even own one. I suggest a room with a dozen or so free for use desktops, intended for checking e-mails, etc.
This would also help the problem of slow wi-fi.
At evenings/nights this could become a second game room for LAN-parties (where people who do have laptops can join in). Maybe host a different game each night (minecraft, shooters,...)