Review of WinPrincess. Once you win big, you need to stop gambling right away! · 2. /[HOST] is organising gambling games in a casino, on gaming tables and with slot machines. WinPrincess is a recognized sportsbook operating under the licensing authority of the Gambling Board of Tanzania. 5 THINGS TO DO WHEN YOU WIN A BIG AMOUNT OF MONEY · 1. This licensing ensures. Check the ratings, bonuses, betting margins and all other important facts about WinPrincess. There are literally thousands of online slot machines to choose from, so you can be sure to find a game that suits your needs and interests. Prepare to wait. Prepare your documents. Chile, Clipperton. . Princess Leisure (Tanzania) Ltd. · 3.