In the early stage of a tournament, the best way of playing a premium hand is as if they were any other hand in your range for that position. If with AKo you would open raise to 3bb from UTG, you should do the same with AA.
Of course, you are going to 3bet or even push if you are in a Late position and someone already raised and got several callers. The question you must do to yourself while pondering between 3bet or push in such situation is: can I make the hand heads up by 3betting? If the answer is no, then you should push when there are one raise and several callers before you.
About the late stages, it will be related to the size of your stack: the smaller your stack is, the more inclined you should be to push with either monsters, premiums and good
hands.