I don't think that it would be a problem for the CV. You will work as an artist not someone trying to attract people inside the building so they spend money. Regarding the ethical stuff, in my opinion if a person want to throw their money away at the slots they will do it anyway. It's not that if you don't accept the job…
@Biomag : it might be unreasonable behaviour for you but there is a big difference here. Casino type gambling is pure luck. When buying a skin or upgrade in a free-2-play game you know what you are getting upfront and you get exactly what you payed for. In WoT for example you have the option to get a refund if you are not…