I did that cheap HKG flight from ORD last week, as a mileage run/mini vacation. I've never seen so many empty seats on multiple flights. I know February is slow, but I've never seen an ATL-MCO flight empty.
Tuesday 2/7
MCO-JFK Went out with 3 empty seats in F, after NonRevs were cleared. I would say total load was 60%-70%

JFK-ORD Only flight without empty seat in F. Probably 70% load.
Wednesday 2/8
ORD-SEA On Alaska, 90% load.
SEA-HKG Probably around 85% load.
Monday 2/13
HKG-SEA Load was around 25% if I had to guess. I was jealous of those in Y who had all 4 middle seats to themselves while I was in bulkhead Y+ without a neighbor.
SEA-ORD On Alaska, looked to be oversold.
ORD-ATL MD88, 3-4 empty in F. Maybe 20 people total in Y. Load factor probably less than 20%.
ATL-MCO A321. Person at gate was asking to change seat. Gate agent said not to worry, there are 140 empty seats on the flight. That means a load factor of 27%.