Amazon (AMZN) has not yet officially announced its new “Flex” service, but a sign at the location gives a hint as to what it may be. It reads, “Please take a ticket located behind you. Please look for your number on the top corner of the wall on your left. Proceed to pick up your package once your number is displayed.” This suggests that it may be a service that allows customers to pick up their packages at the facility.

The company also has yet to announce the launch of its Prime Now one-hour delivery service in the Seattle area, but it has been fairly clear that’s what the facility will being used for since GeekWire discovered documents in May that had the site labeled by architects as “Prime Now.”

Liquor license applications filed for the three Seattle area Prime Now locations suggest that they will be the first in the U.S. to offer a one-hour alcohol delivery service.