Apperantly we in Denver are missing something...
(Edit: I love the groupd of regulars at our store to death, I'm not bashing the gamers (for those of you reading this

))
On topic, I think it'd be more beneficial for
GW, particularly in the US, to keep the tables in the store. Many times while playing at
GW (while we still had one), people would come in and watch the games being played on the big tables, and would express no intrest at all in the small demo tables. Not having those people in there playing would not draw nearly as many potential customers into the store. Also, not charging for tables will keep
more people coming into the store, which means a
larger group of (more or less) steady consumers. Also, the product sold at the
GW gives them more money per unit than though an independent stockist. So from a business stand point, I don't see why they'd want to charge for tables ever.
From a consumer stand point, it'd frustrate me to pay for a table if it's not handled well or properly. If I have to sit around and wait for a table to open up even after I've paid, or still have to put up with some of the people who would be detered by paying for a table (ie, small kids,
TFGs, or being in close proximity to said individuals), I'd probably never game at that store again. If it's handled well, I could probably see myself attending said store more regularly or more often. But to be honest, I doubt
GW would handle charging for tables well, and so I think it'd hurt the community to much if they did.