This is excellent advice. Your faith is what you make of it and you can still be fully committed to Islam without having it interfere with your daily life in the service. I am sorry that I cannot address the perspective of the UPT selection boards, but I come from a similar background and have not had any adversity in ROTC. I think most people are open and do not harbor any ill sentiment towards Muslims, ergo your faith/background should not be a deterrent to your future. You may run into some intolerant people, but they should not negatively affect you. It might actually fuel you as it is always better to stick your success in their faces (so to speak).