Some tourists smoke in public places not respecting regulations, and then get caught and pay a fine.
Some tourists smoke outdoors against the rules, and then get caught and pay a fine.
Arrested : 逮捕される, この場合では: Get caught : 捕まれる を使う.
旅行者が : Some tourists.
規則に反して : not respecting regulations / against the rules.
屋外喫煙して : smoke outdoors / 公共 エ リ ア喫煙して : smoke in public places.
捕まり : and then get caught.
罰金を払う : and pay a fine.