marriage visa you would have to leave the country b4 your visa expires whether your married or not, and if you did marry you would have to apply for a spouse visa from your own country, as you need something called 'entry clearance' to stay, which you don't get with a marriage visa, but you do get with a fiancee or spouse visa (thats why a spouse or fiancee visa is a lot more expensive than a marriagevisa)