First family holiday, where to go?

[BlueGown13]

Our eldest is 11, then we'll have a 6, 4 and 18months old. They've never been abroad (we have)
We're to go?

With those ages I'd go for a European resort near a beach, all inclusive or half board, with on site entertainment and maybe a waterpark.

Or a villa and hire a big enough car for you all.

I'd look at Greece, Southern Spain, Canaries or Balearics.