On sat aug 23, Steve Langasek announced about caffeine service.
Coffee served for free (gratis) at the Olé Latte cart.
The normal opening hours for the cart are 7am-5pm Monday through Friday and 8am-4pm on Saturday. The cart was open on Sunday by special arrangement wih the conference, but there was some confusion about the time - they were not yet open at 9am and they had closed by 1:15pm when our prepaid committment was met. The organizers will try to ensure that the coffee is available during a suitable window for Sunday the 31st.
If you wander two blocks east from the venue on Harrison St, you will find their cart on the corner of 5th Avenue and Harrison. Show your conference badge to get conference-sponsored drip coffee, espresso, and loose leaf tea; and your choice of other drinks at a discounted rate.