Two US Navy ships with about 5,100 personnel are anchored off Phuket until Friday, with thousands of sailors going ashore on leave. Ferries will be busy shuttling crew, and police are preparing traffic and security measures. If you run a hotel, restaurant, tour, taxi or shop in Phuket or Wichit, expect a short spike in demand this week. A similar stop in Pattaya last month was estimated to bring about 100 million baht into the local economy.