I'd say depends. I didn't visit Ibiza until I was into my twenties.
Had I gone younger - 18/19 - I'd guess that I would've baulked at the cost of things: club tickets, drinks prices etc. for the simple reason being I was on a 18/19 y.o. wage and had less disposable income back then.
So maybe this has less to do with age, and more to do with finances.
Of course, they are budget options. Whether I could've afforded to do anything other than go down the West End every night, I don't know. I can certainly understand why some youngsters do exactly that.