@ฟู **************
you did it correctly. Those are all requirements to enter Thailand as a tourist. You could have been asked to show any one of those things, and failure to do so could have resulted in being denied entry. Many people run stop signs every day and never get a ticket, but that doesn't change the fact that it's still illegal.
The op is talking about a tourist visa from an embassy though, which is a completely different thing than you used.