I personally, like to tip slot machine attendants. or, to other officers who work together at the casino. moreover, if they provide services that really spoil us as guests. even so, giving a tip is not an obligation that is required. moreover, if a customer gets JP from a slot machine. This is a voluntary part, and there is no target for a minimum tip. even without having to win any JP, someone can tip the officers.

So, no problem to tip or not. because we all agree, in essence it is the right of every customer.
Well, most people nowadays prefer playing online casino. if, someone hit the Jackpot from any of the slot games, they don't have to tip anyone.