What is the process and requirements to apply for a Non-Immigrant B visa at the Thai embassy in Kuala Lumpur?

The user is preparing to apply for a Non-Immigrant B visa at the Thai embassy in Kuala Lumpur after entering Thailand on a tourist visa. They have questions about whether the passport is returned during the application process and if fees can be paid in Baht. Previous comments suggest that the passport is typically returned to facilitate travel, though fees must be paid in Malaysian Ringgit (MR). Some community members mention faster processing options in Singapore.