I've just got back from a week in Laganas and it got busier as the week got on
Took £350 and spent £300
You can get a 3 course meal and 4 pints of beer/cocktails for 15euro and sometimes free shots thrown in
Bars sometimes do all you can drink for as little as 10 euro and general prices are 2 cocktails and 4 shots for 5 euro
I went out 6 of the 7 nights I was there and bought 2 boat trips, foam party and a carnival night out from reps. The only thing I could've spent more money on was boat or quad bike hire but that's only about 20euro per person per day