In most parts of US, any payout of more than $1,200 is paid in person by the slot floor person. The tipping here starts with a minimum amount of $20 and can be up between 3-10 percent of the jackpot reward. It however, depends on the discretion of the customer.
Do you think it is necessary to give tips or it is just a tradition that is required?
Its both part of human culture and interaction its a form of reward for a job well done it exists in medieval times and still exists in modern civilization we just define it with proper words and position, we experienced it to get a tip and it feels good and it's an encouragement to do our best in our job, it's not really necessary, you should give tip when someone deserves not only because its a tradition, I always give tip for every good service rendered and especially when I won in any games in casinos especially to the attendant because these guys are wishing you to hit the jackpot because they know its a tradition to give a tip and they always give the best service.