Answer
Before choosing or arranging farm and agricultural visits, work backwards from the experience you want and the problems you need to avoid. The useful comparison points are who operates the visit, farming methods, seasonality, animal welfare, food hygiene, transport, walking conditions, children, language and whether purchases support the producer.
Farms are working places, so activities can change with weather and harvest. A responsible visit explains the production process honestly rather than staging unsafe access for photographs.
A dependable provider or organiser will answer plainly and will not hide an important limitation behind vague marketing language. If a safety, legal, medical or access question is involved, use a qualified source rather than an assumption.
Confirm the current terms directly, because Khao Lak services and activities can operate differently between high season, low season and periods of heavy weather.