There are many people in a large room with a lot of furniture with tags on them.
A happy couple share a picnic basket for a lunch date at the park.
Many people in a large room are not a happy couple at the park.
Many people is more then a couple.
A happy couple is two people and cannot be regarded as being many people. People in a large room with furniture with tags are indoors, whereas people with a picnic basket for a lunch date are at the park. People can't be in a large room and a park at the same time.