Withdrawing funds from your Polish mobile casino account with a Visa card is just as simple as making a deposit. All you have to do is open the cashier section on the casino's website, choose Visa as your withdrawal option, type in the details required, and wait for the money to appear in your Visa account.
Most mobile casinos in Poland process withdrawals instantaneously, so you won't have to wait long before the money appears in your Visa card. However, do keep in mind that in some cases, visa casinos with have processing times that can last up to three business days.