To start the ball rolling*, myself and MrsBeerNut are definitely going -- 6pm flight to Brussels on the Friday evening, and back on the 9.15pm on the Sunday. We haven't sorted out anywhere to stay yet.
Pubs start to open about noon on a Sunday, so I reckon a good sleep in will be in order, then I'd be happy to organise a genteel tour of Brussels hostelries for the afternoon.
[size=75:1yjq7yrt]*edit: apologies to riven who I hadn't noticed had actually started the ball rolling -- I'm just pushing it a bit more[/size:1yjq7yrt]