Go to Pattaya. It is now predominately catering to cheap tourists from India. If you have money, or a middle class family you will most likely say no to going there now, and head elsewhere.
Go to Phuket. It is now predominately made up of cheap trash tourists, crime, drugs, violence everywhere, Russians. Benidorm Brits. If you have money, middle class with a family you will vacation elsewhere.
That is what i mean.
Go see islands like Barbados, Aruba, St Lucia, upper class islands in the Caribbean. I'd say Sri Lanka still caters for decent tourists too. Maldives. Thailand could cater for a decent sort of customer - but it always pivots to mass trashy tourism.