7. INTERN VACATIONS. How long can I stay as an Intern? Can I take a longer holiday or visit the mainland and then return as an Intern? 28 Nov Posted on November 28, 2015June 20, 2016Author Leonardo D'AddabboIf you leave and return within 3 months there is NO Retraining Fee!After 3 months there is a $50 Retraining Fee.After 1 year there is a $100 Retraining Fee.Arrive with aloha, leave with aloha!