You don't have to worry about being delayed or missing a flight. If there happens to be a problem because of the airline delay or airport officials including immigrations, you can be certain that you will be put in a flight that flies to the destination ( either a direct or a connecting one) soon. Everyone out there understands the circumstances well and it should never be a problem. Have a safe trip and all the best for your higher education. One thing you need to make sure is you communicate well to the airport officials. Even if the delay was caused by them, be polite in asking them if they can put you on a flight that still takes you the deisred destination faster among the alternatives being provided.
