If you are looking to make money, then do not op games. If you want to do it for fun, and get pinball out in the public then go for it. I don't think it will even finance your hobby. A family fun center will make you about $100 per month per game that you will have to split. Is $50 a month worth it ? When people say don't do it, it is legit advice.

I have 38 games out on location with 10 of them at standard type of locations (small family arcade place, kids jumping place and indoor go carts) These are not worth the time it takes for me to go there, but at this point they are offsite storage that makes a little money.