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10
Ekkamai bus terminal 130–150 baht, 2–2.5 hrs to Pattaya bus station, then baht bus or Grab to Jomtien 20 min. Airport direct vans exist but cost more. Bell Travel from BKK ~300 baht drops central/Jomtien hotels.
3
Ekkamai bus was easy — buy ticket at counter, buses every 30 min.