When we inquired about this, they said they would only consider more dire cases like children or those who are physically disabled. A healthy couple who is technically able to take care of themselves wouldn’t qualify, according to the CDC at the time.
I have small children and definitely used that as justification.
Officially you need to, but in actuality they won’t check. When I came back from abroad, I just quarantined in my apartment with my girlfriend. We have two bedrooms, but one bathroom. Being locked up for 14 days is a sacrifice enough.