Places to write in RTP: Observation Park at RDU.

Observation Park at RDU Airport is a pretty nice place to write because:

1. No WiFi (no distractions)
2. Large steel birds which should be flightless nonetheless soar and land with grace
3. Air Traffic Control Chatter on the speakers
4. There's a bathroom
5. There are details on small aircraft to read, like flight range, capacity, fuel consumption, etc.