No you can't, the only people I have seen do it are some of the travel agents but they hold your info and still submit the TDAC within the 3 day window. The online form only takes 5 mins and you only need to fill in the highlighted * boxes
You won't know about visa exemption but you could just apply for a tourist visa in your own country before you arrive that was you are guaranteed to get your 60 days then extend in country for another 30 days, do a visa run and if it's only 30 days visa exempt then you can extend that again for 30 days meaning you'll be ok.
you really think the immigration officer you are showing your passport to is going to phone your hotel?!!. I just arrived from Japan and I filled out my tdac and as long as it's in the system they don't ask, only to see your passport
you use your own bank account in the USA as long as you have the equivalent of 800k baht in USA dollars or 65k baht monthly equivalent. You only need the thai account for your extension if you apply before you arrive for your non O visa
Why don't you just apply for your non O over 50 retirement visa in the USA before you travel? You will then get a 90 day stamp when you arrive and with this visa you will be able to open a bank account and start the process for your extension? Much simpler and easier for you
you can put any flight arrival and departure date in that is on one of the flight co pany schedules. You don't need to book the flights just put down the flight numbers
you don't need a flight out if you apply for a non O retirement visa before you arrive. It's very simple to do especially when you are in your own home with time to fill it in. Your new life in thailand will start much easier having the non O sorted before you arrive