yes and 800,000baht in their bank, if you can open an account. That’s iffy today. Plus it needs to age for three months before applying for retirement visa.
plus the condo only is owned not the property. Property cannot be purchased outright by a foreigner. Even if you married a Thai and invested in a home. If they died, you have one year to vacate as you can’t own land. The house only. Must sell house and vacate.
6 months if you can’t provide a bank letter. The US banks won’t do that, but will print out six months worth of statements. Or if you have a mobile phone and printer, you can provide your own.