A tour guide must be an effective communicator in three key ways:
1. Clarity - by using simple language, emphasis, repetition and examples to ensure the message is understood as intended.
2. Credibility - by appearing self-confident, being knowledgeable about local information, admitting when unsure, and giving unbiased opinions supported by facts.
3. Sensitivity - by using polite language, avoiding arguments, not denying requests directly, listening, acknowledging others' perspectives, and making guests feel valued. Effective communication is important to build goodwill with guests.