Do you allow semi trucks to park in your parking lot?

yes, there are often lots of overnight semis parked overnight in the back (north lot) and the edges of the main lot. Do be aware that the center of the main lot is brightly lit well past midnight for safety concerns for the shoppers and employees.

Are they scheduled for being loaded?

Yes, but not overnight

For shopping yes

No

For shopping I would imagine. But not to be parked a long period of time for sleeping that I know of.