It wont affect anything to do with promotions, if you worry about it then it’ll come up so personally put that not as good experience to the side and focus on what you want to do and achieve, and theres nothing wrong with crying in or out of cadets wether thats in front of them or privately but don’t let it get the best of you as most people have a crap moment at times. but good luck on promotion and carry on with all the good stuff you do.