In the old days there were unboxed, set up with Aussie Coin mechs and sited straight away. It the late 70's the games were unboxed, playfields stripped and contact adhesive was applied to the playfields. They were then re assembled, tested and then sited. There were new games going onsite in waves, and it was a hard job because older games the NIB were replacing had to be returned, cleaned, repaired and then sited somewhere else. There was always a domino effect. The NIB would go to the best or biggest location, and the games that had been earning well would stay, the ones not earning were moved on.
In the mid 90's, Dad's last locations still had Bally Paragon, Space Invaders, Star Treks, KISS' and a Playboy all earning money.
The old days were exciting as there were always new games arriving.