They're reading websites, watching videos and ... Wait for it... Working. Yup on a Saturday no less. Scheduling appointments, reviewing PDF's and balancing a checkbook.
None of this is ground breaking of course, it's just so cool to see two people collaborating and getting work done while lounging in a waiting area without a bunch of cables all over the place and with devices that are so small you barely even notice they are there.
The future is now.