Based on the clue 'at six flags over texas you must be 36 to ride in ...', what is the answer?

Based on the clue 'at sea the bells ring every half hour 8 bells sig...', what is the answer? What is referred to by 'at sex'? Based on the clue 'at shedd aquarium these white whales are such good...', what is the answer? Based on the clue 'at shizuka ny day spa nightingdale droppings go in...', what is the answer? Based on the clue 'at some 500 long with 9 masts the cheng ho was la...', what is the answer? Based on the clue 'at southern nazarene univ you can find a happy med...', what is the answer? Based on the clue 'at space camp sally learned astronauts call spacew...', what is the answer? Based on the clue 'at spectrum auctions the government sells parts of...', what is the answer?