Of course. Need to be extra cautious so you don't get a surprise bill for your birthday.
That's what I liked more about Oracle as compared to AWS or GCP etc', is that you need to manually upgrade your account to paid account. and if u don't then you just can't create another machine or another block storage.
But still it's extremely important to read every word so you know what you're getting yourself into.
I knew this would be a waste of time! *loads gun