Documents needed for a Trailing Spouse Extension - follow up

[mankindmatt5]

I posted a week or so ago about the documents needed for an Extension for my wife. 

I am here on a Work Permit/Non-B. Wife got a Non-O (visiting working foreign spouse in Thailand), through the online portal, from Taiwan, a couple of months ago.

I'll just summarise everything here, for anyone in a similar position in the future. 

According to the Immigration Information counter at CM, the initial Non-O visa entry must be obtained outside Thailand, for this type of visa. A previous poster contradicted this, in a previous thread. That aside, it can be done in Taiwan easily within a couple of days, as long as documents are all up to date and provided. 

Once arriving back in Thailand and going for the extension, applicants will need bring in the usual stuff (photo, application form etc), plus...

All pages of Work Permit Holder's Passport - copied (+ signed by work permit holder)
Copy of Work Permit
Copy of School/Company Registration (signed by relevant company person)
Letter of invitation (in Thai) for Spouse Visa

Letter of confirmation (in Thai) of Work Permit holder's position + permission of stay
All pages of spouse Passport (signed by holder)
Copy of marriage certificate (stamped by consulate or embassy of the country where the marriage took place)

They also asked at immigration to see the original passport for the working spouse (me), so best bring that along too.

Was happily surprised that this only took two trips to immigration to sort out. Also expected more documentation or nonsense relating to our income, address or marriage documentation, but this was all fine and no additional proofs, photos, bank statements, contracts etc were requested.