Whilst this does not really apply in Bangkok it will if you travel to your favourite beach in Thailand. The authorities are planning to implement a total ban on smoking on beaches. At first the main beaches in Pattaya, Phuket, Hua Hin, Koh Samui etc will be targeted, with the others following later.
They say that receptacles will be provided at entry points to the beaches so that smokers can deposit their cigarette butts before entering the beach area.
As usual with such clampdowns it might be a five minute wonder, but who knows? The penalty for smoking on a Thai beach will be a fine up to 100000 Baht / 1 years imprisonment. The main argument for this is pollution of the sea and beaches.
I will leave it to you to think about that.
At first offenders will be warned but it is not clear how long this leniency will last. Apparently there will be designated smoking areas at the beaches and signage stating where you cannot smoke.
Here is a list of affected beaches: