Is there a way to block a drone from going to set vending machines?

Comparing the player location to the vending machine location might work in the CanUseVending hook.  Or maybe OnVendingTransaction.

ya does not call when using drone Humm.

I'm also looking to block drone to specific Vending Machine. UP!

I have found a public method. Perhaps a hook could be added there:

public bool IsVendingMachineAccessible(VendingMachine vendingMachine, Vector3 offset, out RaycastHit hitInfo)
{
    Vector3 vector3 = vendingMachine.transform.TransformPoint(offset);
    if (Physics.BoxCast(vector3 + (Vector3.up * this.testHeight), this.halfExtents, Vector3.down, out hitInfo, vendingMachine.transform.rotation, this.testHeight, this.layerMask)) {
        return false;
    }
    return vendingMachine.IsVisibleAndCanSee(vector3, 2f);
}

public bool IsVendingMachineAccessible(VendingMachine vendingMachine, Vector3 offset, out RaycastHit hitInfo)
{
	object returnvar = Interface.CallHook("IsVendingMachineAccessible", vendingMachine, offset);
	if (returnvar is bool)
	{
		return (bool)returnvar;
	}
	Vector3 vector = vendingMachine.transform.TransformPoint(offset);
	return !Physics.BoxCast(vector + Vector3.up * this.testHeight, this.halfExtents, Vector3.down, out hitInfo, vendingMachine.transform.rotation, this.testHeight, this.layerMask) && vendingMachine.IsVisibleAndCanSee(vector, 2f);
}
​