Pwingles makes a good point, but the OP doesn't ever indicate he wants a website for his draft.
He's clearly looking for responses like "coffee shop" or "rented game parlor" or "airport lounge." But a 12-hour timer precludes any of these.
For my money, the best site for a slow offline draft would be on a hotel veranda overlooking the ocean, with a gentle tropical breeze bringing the scent of salt and seagrass, and bar service on demand. And of course, there would be a strong wifi signal. Just because the draft is offline doesn't mean folks won't want to check their cheatsheets and breaking news...