<p>If you get rejected you can’t reapply. But if you get rejected EA you certainly wouldn’t have gotten in RD.</p>
<p>HYPS has SCEA (you can apply to only 1 EA), other ivies have ED (you must attend if accepted), and MIT, Caltech, UChicago, Georgetown, Notre Dame, and probably more have regular EA. Whether or not I would recommend it depends on the unique situation, but in general you have nothing to lose from regular EA. SCEA and ED is more complicated.</p>