Yes, you will be fine. When you get down to the ME area they will ask you if you have your vouchers or not. If you did they would scan them at the entrance and send you on your way. If you don't have them you will be directed to the check-in desk. They will reprint them there for you and check you in there. Shouldn't be a big deal. If there isn't a line at the desk then it might add 5 minutes.