What do you do if someone fails a temp check at the front of the park? Do you deny them entry, but let the rest of their party in who may be pre-symptomatic or asymptomatic, but still infectious if COVID is what caused the guest's temp? If they fail the test, do you put them on a bus, monorail or boat back to their resort or car? Do you allow them to travel on that transport with other, unknown and unknowing guests? Do you bleach all surfaces on the transport they took to the park, if you can identify it, and on the transport they took away from the park? Do you immediately contact their hotel to alert them of a possible case requiring isolation? What about when they get back to their resort? Are resort staff alerted, with photo of individual denied entry to the park, so that they can be denied entry to pools, lounges, restaurants, communal areas, elevators etc, and so housekeeping responsible for servicing that person's room can be issued with PPE before entering the room?
Temp scans contribute very little to infection control if other steps are not taken to reduce the contact any "suspected" COVID individual has with other guests, staff, and surfaces following the temp. scan.