Kelantan (Malaysia) & Pattani, Songkhla, Narathiwat, Yala (Thailand) used to be under one kingdom,same people speak same Malay languange(google bahasa melayu kelantan) of course after long time separate there will be difference but in general kelantan people can speak english while malay thai people can speak siamese(usually they can't understand if u speak with heavy malay malaysian slang/accent)
Most Thai Malay have already been assimilated, they are speaking Thai, following Thai culture, using Thai Name, forced to change religion as Buddhist, mix Thai blood a lot of Thai Malay new generation don't know how to speak their own mother language
Ini raya haji pertama ke bro? Malam raya kami raya di betong, pagi hujam baru otw ke Yala ... X de luck mau jumpa bro, kalau jumpa bole bergambar 😁😁😁👍👍