This 155-foot aquatic playground indulges adventurous desires with a variety of tables and games, from blackjack and roulette to traditional poker, video poker, and fireplace poker. The friendly crew aboard the newly renovated Jacks or Better Casino raises the stakes on monetary thrills as the vessel meanders from the Mayport area down the coast. For $50, you get a casino experience for four (up to a $128 value).For $30, you get a casino experience for two (up to a $64 value).Clean up with today’s Groupon to Jacks or Better Casino. Because the first floating casinos were steam-powered, they often doubled as dry cleaners where winners could have their cash neatly pressed.