going to Zante in October we always go at the same time but to different Islands. One tip we picked up with regards to flies n wabbees - buy the cheapest greek coffee - usually in a green tinfoil bag.
Put a little mound of coffee onto a stainless steel container such as an ashtray, strike a match n stick it in the coffee making it smoke / smoulder. the little darlings hate it n don't bother you. However always make sure its a steel ( tin ) container cos it gets boiling hot - keep kids away from it - n don't do what I did and use a normal ashtray which cracked quite loudly then exploded so no chance of pretending it wasn't me !!