Most couples travel alone together. Couple trips with other couples (friends, family) produce different dynamics — shared experiences, conversation that includes more than two people, easier social pace.
Where this works
Old friends who travel similarly. Couples with similar children if family trip. Destinations with built-in activities that work for groups. Short trips first to test compatibility.
Where it doesn't
Couples with very different travel styles. New friendships untested in shared close quarters. Long trips first time.