I am having problems choosing between those two in a phrase I use a lot at work. I am gonna go straight to the example
'Your order status has changed to 'At delivery site at CH 8060 Zurich'
I work in logistics and I send clients updates like this for every job. Postcode and city name can be anything as I operate worldwide.
Question is. Which one is better/corrext here for 'At delivery site in' or 'At delivery site at'
Thanks for your help