If you don't use your EAD card for working, you don't need EAD card at all.
Go to vacation. You can only work after EAD received.
You cannot work without EAD. You cannot get your salary without EAD. Go to a vacation without salary. Or let your company/institute pay salary as bonus after you receive your EAD card.
If you don't use your EAD card for working, you don't need EAD card at all.
If you don't use your EAD card for working, you don't need EAD card at all.