I have a retail client in airports across the US. They have multiple physical locations in a single airport. For example, in one airport they have 16 locations, for customer convenience. But some of these locations are more modern ie they are 3 bookshelves along the wall. You've seen this type of setup before.

How difficult is it going to be to get all of these location on GMB?

How difficult is verification going to be? Surely it won't be by post?