Jericoacora is a great place if you want to relax and enjoy sightseeing. The sand banks, hiking trips and fresh water lagoons are very special. Most of the activities include buggy trips to the main destinations. You can rent a buggy with a driver for about U$ 80.00 for the whole day and it can fit up to 04 passengers.
The night life around the main square of the city of Jericoacoara is great, lot's of friendly people and tourists from all over the world. The streets are all covered in sand, there are not hard floor sidewalks or asphalt, so don't bother bringing shoes or pants, only sandals and shorts will serve you in Jeri. This is what makes it really special, it's the most casual location I've been too.
I staid there for 5 days and I think that was more than enough based on the limited number of attractions. You'll end up repeating the tours if you stay longer than that.
However it is definitely a family/couples destination. Don't expect a very exiting night life.More