you could always do what i did on my 18th beau, woke up at 6 had to clean my room for rounds =( started work at 8 till 5 then spent the night revising as i had a exam the next day,didnt drink, didnt see any of my family or friends couldent go home for it either. possible the best 18th anyone could ever have but, i say go out to a club, get wankered!!