How do I fill out an application for a Non-O visa for retirement in Thailand?

𝗗𝗮𝘁𝗲 𝗼𝗳 𝗮𝗿𝗿𝗶𝘃𝗮𝗹 𝗶𝗻 𝗧𝗵𝗮𝗶𝗹𝗮𝗻𝗱 – 𝗱𝗼 𝗜 𝗷𝘂𝘀𝘁 𝗲𝘀𝘁𝗶𝗺𝗮𝘁𝗲 𝗴𝗶𝘃𝗲𝗻 𝘁𝗵𝗮𝘁 𝘁𝗵𝗲 𝘃𝗶𝘀𝗮 𝘄𝗶𝗹𝗹 𝗯𝗲 𝘃𝗮𝗹𝗶𝗱 𝗳𝗼𝗿 𝟵𝟬 𝗱𝗮𝘆𝘀 𝗼𝗻𝗰𝗲 𝗶𝘀𝘀𝘂𝗲𝗱?

Put down an estimated date you're comin' here

you are correct a single entry Non-O visa is valid for ENTRY to thailand for 90 days starting the date it's issued.

𝗧𝗿𝗮𝘃𝗲𝗹𝗹𝗶𝗻𝗴 𝗯𝘆 𝗮𝗻𝗱 𝗙𝗹𝗶𝗴𝗵𝘁 𝗻𝗼 – 𝗮𝗹𝘀𝗼 𝗱𝗼 𝗜 𝗲𝘀𝘁𝗶𝗺𝗮𝘁𝗲?

FIND a flight that you're likely to travel here on and use those numbers and carrier

𝗜𝘀 𝗿𝗲𝘁𝗶𝗿𝗲𝗺𝗲𝗻𝘁 𝗰𝗹𝗮𝘀𝘀𝗲𝗱 𝗮𝘀 𝘁𝗼𝘂𝗿𝗶𝘀𝗺? just put tourism

𝗡𝗮𝗺𝗲 𝗮𝗻𝗱 𝗮𝗱𝗱𝗿𝗲𝘀𝘀 𝗼𝗳 𝗹𝗼𝗰𝗮𝗹 𝗴𝘂𝗮𝗿𝗮𝗻𝘁𝗼𝗿 – 𝘄𝗵𝗼 𝗶𝘀 𝘁𝗵𝗶𝘀? Put the address of the hotel where you're staying when you first fly in

𝗖𝗼𝘂𝗻𝘁𝗿𝗶𝗲𝘀 𝗳𝗼𝗿 𝘄𝗵𝗶𝗰𝗵 𝗽𝗮𝘀𝘀𝗽𝗼𝗿𝘁 𝗶𝘀 𝘃𝗮𝗹𝗶𝗱? just write many

𝗧𝗵𝗲 𝗘𝗺𝗯𝗮𝘀𝘀𝘆'𝘀 𝗰𝗼𝘃𝗲𝗿𝗶𝗻𝗴 𝗹𝗲𝘁𝘁𝗲𝗿 𝗮𝗹𝘀𝗼 𝗿𝗲𝗾𝘂𝗲𝘀𝘁𝘀 𝗶𝗻𝘀𝘂𝗿𝗮𝗻𝗰𝗲 𝗳𝗼𝗿 𝗱𝘂𝗿𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝘀𝘁𝗮𝘆 𝘄𝗵𝗶𝗰𝗵 𝘄𝗶𝗹𝗹 𝗯𝗲 𝟵𝟬 𝗱𝗮𝘆𝘀, 𝗼𝗿 𝘄𝗶𝗹𝗹 𝗶𝘁? You need a minimum of 30 days of the 100K USD insurance

𝗮𝘀 𝘁𝗵𝗲 𝘃𝗶𝘀𝗮 𝗶𝘀 𝗳𝗼𝗿 𝟲𝟬 𝗱𝗮𝘆𝘀 𝗿𝗲𝗻𝗲𝘄𝗮𝗯𝗹𝗲 𝗶𝗻-𝗰𝗼𝘂𝗻𝘁𝗿𝘆 the visa is NOT for 60 days, you get stamped in for 90 days on a non-O visa .

𝗔𝗻𝗱 𝘀𝘁𝗮𝗿𝘁 𝗱𝗮𝘁𝗲 𝗼𝗳 𝗶𝗻𝘀𝘂𝗿𝗮𝗻𝗰𝗲? you start it the date you apply for the visa seeing as you have to show coverage when you apply

𝗦𝗵𝗼𝘂𝗹𝗱 𝗜 𝗯𝗼𝗼𝗸 𝗮 𝗼𝗻𝗲 𝘄𝗮𝘆 𝘁𝗶𝗰𝗸𝗲𝘁? you can or you don't have to

𝗔𝗹𝘀𝗼, 𝗵𝗼𝘄 𝗹𝗼𝗻𝗴 𝗱𝗼𝗲𝘀 𝗶𝘁 𝗻𝗼𝗿𝗺𝗮𝗹𝗹𝘆 𝘁𝗮𝗸𝗲 𝗮𝗻 𝗲𝗺𝗯𝗮𝘀𝘀𝘆 𝘁𝗼 𝗽𝗿𝗼𝗰𝗲𝘀𝘀 𝘁𝗵𝗲 𝘃𝗶𝘀𝗮? <- iF you go slow, get all the information they require, upload all the document images of what they require it goes quickly. It's NOT a race don't feel you need to burn thru it, you can stop, save the pending application and come back to it. The mistakes are what's gonna slow your process down.

Most people get approved in 3 to 5 working days but the websites say it can take up to 15 days.

Don't make it any harder than it is, believe me it is NOT brain science or rocket surgery. Go slow, understand what they're asking and requiring, meet those requirements and you'll be fine.