What should I confirm before choosing vegetarian, vegan, halal and dietary needs?

Dietary options are available, but sauces, fish sauce, oyster sauce and shared cooking surfaces can create hidden ingredients. Explain requirements clearly and confirm rather than assuming. Confirm current opening days, exact location, reservation requirements and how payment works. For food, explain allergies and dietary rules clearly; for shopping, check authenticity, warranties, alterations and delivery dates. Practical Pattaya note: Match the advice to your exact location, budget, transport and travel dates, and confirm time-sensitive details directly with the relevant provider or official source.