Look up my post on this a couple of weeks go, need to prove you still have access to 500k (don't have to be thai bank as its a tourist visa most can't open anyway) plus 1900tb and tm30. Pretty much same as other tourist visas plus proof of funds.
regardless, the Thai Immigration control matters of reporting, then are we not to follow their advice and rules! Regardless of which fruit or its restraints were all talking about 90 days and confusion over information given, are we not