This document is a conceptual working paper that formulates five original theories for integrating Artificial Intelligence (AI) and cultural communication within the context of tourism. Developed as a preprint, this work has not yet undergone peer review and is intended to function as an open scholarly reference and intellectual foundation. The proposed theories—Cultural Epistemic Convergence (CEC), Deep Cultural Knowledge Integration (DCKI), Cultural-Semantic Discourse Interaction (CSDI), AI Cultural Transparency Framework (AICTF), and Dual-Layer RAG (DL-RAG)—emerge from sustained theoretical reflection informed by prior empirical research on the effectiveness of Retrieval-Augmented Generation (RAG) chatbots with memory injection in cultural tourism dissemination, as well as two foundational monographs on sustainable tourism transformation and cultural communication ethics. This working paper aims to bridge communication studies, digital anthropology, and AI research by positioning AI not merely as a technical tool, but as a cultural and epistemic actor in meaning-making processes. It is designed to support subsequent empirical validation, particularly Human-in-the-Loop (HITL) studies, and to serve as a foundational manuscript for future journal articles and potential book development.