Millions of soldiers resided in Soldier City so there were many entertainment spots in the city. The luxurious shopping street in Soldier City was similar to the shopping streets in all the other cities. The only difference was, the staff of the shops was soldiers.
Normal businesses were not able to set up in Soldier City. All the shops in Soldier City were under the Purchasing Department of the military. The products were internally distributed supplies so their quality was guaranteed. Not only were they better in quality than those products outside, but they were also relatively cheaper too.
Hence, all the soldiers in Soldier City spent most of their salary here. Some bought necessities they currently needed while others bought in bulks to bring them back after their term in Soldier City ended. Even if they couldn't use it, it was a good gift to normal people. Normal people might not be able to buy military supplies even if they wanted to.