Why people consider it for a day outing
It is a highway-side farm property rather than a full destination resort, which is exactly why it suits a single-day plan. You drive out in the morning, spend the day on the lawns with games and a meal service, and return the same evening without booking an overnight stay. The site's own travel note puts it at roughly 30–45 minutes from Gurgaon and 60–90 minutes from Delhi, depending on NH-48 traffic — short enough for a family or office group to attempt as a day trip.
For groups, the practical appeal of a farm-resort picnic is the single-venue format: one place for seating, food and recreation, instead of splitting a day across several stops.