What is the single most important rule of Thai business etiquette?Protect face — yours and everyone else's. Stay calm and smiling, never criticise or contradict anyone in public, give people a graceful way to say no, and treat seniority with visible respect. Get that right and most other details are forgiven.
Do I need to wai in a business meeting?You're not expected to master the wai, but returning one when offered — palms together, a slight bow — is polite and well received. In international settings a soft handshake plus a smile is also fine. Let the most senior person set the tone.
How are business cards handled in Thailand?Card exchange usually opens the meeting. Offer and receive with both hands (or the right hand supported by the left), take a moment to read the card you're given, and place it respectfully on the table. Having one side printed in Thai is a strong signal of commitment.
Does 'yes' always mean yes in Thai business?Not necessarily. Thais communicate indirectly to preserve harmony, so 'yes', a nod or a smile can simply acknowledge that they heard you. Soft phrases like 'maybe' or 'we'll see' often mean no. Confirm agreements in a written follow-up.
How important is punctuality?As a foreigner you're expected to arrive on time, so plan around Bangkok's heavy traffic. Thai counterparts may run slightly late, and reacting with visible irritation would cause loss of face — build in buffer time and stay relaxed.
Is gift-giving expected?A modest, well-presented gift when visiting an office or home is appreciated — quality snacks, fruit, or something from your home country. Present it with both hands, keep it modest so it can't look like a bribe, and don't expect it to be opened in front of you.