I Have answered this question many time ... u can get 1 more month by geting air ticket for ure family and an extention form typed in arabic, the ticket date must be end of june since ure family visa expire end of may .. go to jawazat in madinat khalifa then u will get the extension done its very easy .. for more months i suggest u meet the captain and expalin the reson u want them to stay here he might give u 2 months extention .. captain is available from 6 morning to 11 oclock.