ive been to the island of Kos, it was 4 yrs ago tho and there was not a sniff of the trance (but thats not what i went their for, so hey - i was happy!)
back then there was only 2 major resorts on the island and yes, they were full of tourists falling over drunk of an evening, which is funny.....for a while.
some pretty places to see, some nice beaches and the sea down that way is amazingly clear and crystal blue....lovely.
I went in mid april and fuck it was hot! a nice change from cloudy rainy england at that time of year