My MacBook recently broke (again - four breaks on the original I bought and now one break on the replacement Apple gave me four or five months back), and I took it to the Apple Store in Emeryville, CA this Monday to see about getting it fixed. The good news is that Apple's repairing part of the damage under warranty. The bad news is that it ain't gonna happen this week.
The "Apple Genius" who assessed my machine and filed the paperwork told me that there's a hold on in-store repairs until after the launch due to resources being re-assigned to prepare for and deal with the potential flood of sales and activations for the new $199 iPhone 3G. While the actual repair "should only talke about 30 minutes or so," they're just not able to do it until the launch is over. And by over, he meant until things have returned to normal, which could be by closing time Friday, by next Monday, or at some later date. His best guess was mid- to late next week.
The Genius offered me the choice of waiting for a post-launch call from the store, at which time I could bring the machine back and have it fixed while I waited or having them send my MacBook to the Apple repair depot, which would take about 10 days from drop-off to pick-up. Seeing as mine is a "cosmetic repair" - the chronic front edge of the keyboard crack that plagues MacBook owners worldwide - I opted to keep my machine with me and wait for a call.