Hi everyone!

I'm looking for confirmations and I apologies if this questions may look silly or already been asked!

I'm on a 1year multiple entry non o visa based on marriage.and i need to do my first visa run by 12.12.

All I have to do is: cross any border, get stamped out of thailand and in in the new country, right? then i can be back in thailand even on the same day.No papers done in advance, no money, all I will need is my passport. This is my understanding so far.Is it correct? for safety ill bring the 20k cash.

Do I need a re entry permit or any paper done before in order to get stamped in again ? and can i do it even few days before the actual end of my 90 days?

Thank anyone who took the time to read my post, wish you all a good weekend.