Tallahassee, Florida - At 18, Floridians can vote, join the armed forces and buy a pack of cigarettes. Should they be able to play blackjack or slots? A state Senate committee last week advanced a far-reaching gambling package that would turn Seminole resorts into full casinos with craps, roulette, blackjack and no-limit poker. And South Florida racetracks would, for the first time, be authorized to operate blackjack tables.