What is the process and timeline for applying for a Non-B visa at the Thai embassy in Singapore?

Hi everybody, i would like to share my experience with the thai embassy in Singapore. Im applying for Non-b visa. In Singapore they require the documents for the work permit. To get this documents i have to be outside of Thailand before my company apply and it takes 3 days to get it. So Sunday 26 May i fly to Singapore. My company went to labor office on Monday 27th and got the documents on Thursday 30th. On same apply online for visa. Here starts the problem. This is not an application for visa but its just to check if you have proper documentation to apply for visa. Once my documents are approved so i can go to embassy to apply for visa. Just to review my documents will take 2 days so should be Monday because cannot be Saturday or Sunday. Monday immigration here is close so Tuesday 4th June. If they accept my application will take other 2 days to get visa so about Thursday 6th or Friday 7th June. So you cannot plan nothing about your hotel check out day. And until last 2 days you cannot book the exactly day to fly back...total will be around 12 days in Singapore..if im lucky....Sure beautiful place but really expensive.

In Penang i did everything in 2 days including trip...