Just been to Tesco's and they had Wii consoles in stock (last time I went they didn't even sell Wii games). I know my local Game is getting more stock in tomorrow as well, so there's definitely stock getting in all the time, the consoles just seem to keep selling out.
Anyway, littlesheepy, mine is in my room as well, and i've played a lot of games sitting on my bed,

although, when i've played it multiplayer, i've just taken it downstairs as there's lots more room. I have played Wii Tennis is literally a 3ft by 1ft floor space.