Perhaps someone like Adfly will have more info on the number of pax per flight in August, but from what I've been told the numbers on each flight are very good, high 90% LF on each of the sun routes. The drop in numbers is due to less flights, not the same number of flights with less people on them. Another factor will be Volotea being all 717 this summer compared to a mix of (mostly) A319 and 717 last summer, that's 50 seats per rotation lost straight away.