....and extended family? 
DDs will be 3.5 and 10 months. Additonally there will be DH, my parents, my brother, SIL and a 6yo and a 1yo - staying a large villa on the Costa Blanca.
I've flown twice with dd1 when 16 months and 30 months.
Does anyone have any tips for the airport, flight, activities, dealing with the heat, what I should pack that's not obvious?
When we're there, we think we'll hit the beach early in the day and go back to the villa for lunch. We hope the children will happily have a siesta and then they can play by the pool in the late afternoon. Not sure about evenings and eating out yet.
Thanks for any advice.