Lol thanks man, that cheered me up. The more I read the more I'm second guessing it. Apparently you need a transit visa and health insurance for layovers longer than 12 hours too.
You don't need another work permit to work part-time. The law says as long as you're working in the same field as your work permit, you can do part time work. So if you have a WP as a teacher, you can also teach part time for another school/company.