Customer management for an establishment involves operating a server that hosts system software and interacts with various computing devices over internet and wireless network gateway connections. The server communicates with devices at the establishment and customer computing devices in real-time, providing system performance updates, text messaging communications to the customer regarding table availability and marketing information and synchronizing the information communicated within the system. A computer user interface at the establishment communicates with the server and allows an establishment host to capture and transmit customer information to the server and make of the server processing requests that can include sending text message alert notifications to a customer mobile device informing of an available table and providing marketing messages. A secondary device, operated by a waiter of the establishment, communicates with the computing devices of the system and can receive communications, such as customer attention requests, from the customer mobile device.