Good place for flat water between Fortaleza and Jericocoara is Ilha do Guajiru,
Huge tidal lagoon (2 km on 800 m) , with strong wind.http://go-kite.com/index.php/brazil-ilha-do-guajiru/general-description
There are no "night life", but nice atmosphere and kiperinhas in the beach pousadas.
Another great place for flat water, after Jericocoara, is Barra Grande:http://go-kite.com/index.php/brazil-barra-grande/general-description
At the right tide, you get huge flat shallow open sea lagoons.
Night life again, are only hummocks and kiperinihas in kite surfers pousadas.
You can get to Barra Grande from Jericocoara by 3.5 hours of off road driving,
or 6 hours with public transportation.
Paracuru is a great spot, open sea lagoon of flat water (at the right tide),
and clean waves breaking outside. http://go-kite.com/index.php/kite-brazil-paracuru/kitesurf
Paracuru is small beach town, and there no pousadas at the kite beach,
so you have smaller, more crowded lagoon, but lovely Brazilian evening life.