I don’t know very much about Easter, but I do know this:
If you are hosting an indoor Easter egg hunt, using real eggs is likely to end poorly.
Particularly if you are good at hiding eggs in hard to find places.
If you use real eggs indoors and don’t find all of them, the ones you miss will rot and create a very foul smell that is nearly impossible to remove.
If you use plastic eggs with non-perishable candy, your egg hunt is much more likely to end with happy people and no unpleasant side effects.
tl;dr Using real eggs in an indoor Easter egg hunt is likely to result in your house smelling like rotten eggs.