Some countries insist on a degree, but I have heard of people working without one in South America, though I am afraid my experience has been in Europe and Asia. Getting the CELTA would be a good idea as that is the most asked for thing in job adverts. A degree would help, and some places will certainly not look at your CV, but that doesn't mean you won't be able to find work. The illegal option is a high risk- it's where the cowboy employers are, the ones who don't regard their word as their bond.
Student or Learner