Systems and methods for real-time user engagement, interactions, and management for various events. A beacon device, either a standalone beacon tag or a part of a user device, is able to interact with a gateway and/or a server. The systems and methods are used for enhancing and optimizing user experience in terms of, for example, obtaining location information of the beacon/user devices, providing location-based services, notifying users of event activities, simplifying distribution and viewing of promotional or services data, and facilitating the interactions and communication between users in different roles (such as visitors/attendees, patrons, sponsors, exhibitors, organizers, event service providers, property management users, and business users) in a venue for an event; facilitating the collection and processing of business or user information and follow-up communications after the event; and managing the data regarding locations, maps, events, users, leads, security, configurations, devices, user applications, and promotion data.