noun
breakfast voucher; breakfast coupon
A ticket or coupon that can be exchanged for a breakfast meal, often provided by hotels or event organizers.
ホテルの朝食券をフロントでもらいました。
I received a breakfast voucher at the hotel front desk.
この朝食券で和食か洋食を選べます。
With this breakfast coupon, you can choose either a Japanese or Western meal.