couple's plan; couple package; couple deal
Used in the hotel and travel industry for a special rate or package designed for two people, often including romantic perks.
I booked a hotel's couple plan for our anniversary.
This inn's couple plan includes in-room dining and a private bath.
Variant with interpunct; less common in running text but seen in some promotional materials.
Wasei-eigo (Japanese-made English) combining 'couple' and 'plan'.