Won't you need to speak the language or can you deal with them in English?
Are you sure this is possible, why would they help you for free and how do you know that it is possible?
Full Disclosure : THIS IS NOT MY FIRST HAND EXPERIENCE.
Information about Ajman freezone helping for free is something I know this from a fellow Indian who went through this process on his own.
My experience : I went through a consulting firm who charged me (and keeps charging me for silly stuff .. they ask $1k for submitting 1 email few months ago. )
Answers to other questions :
You don't need to speak Arabic. English is just fine.
Why would some freezones help you for free ?
There are many freezones in UAE.
Each freezone is controlled by each state (emirate)
And these freezones are competing against each other to get as much business in their freezone.
Ajman , UAQ etc are small freezones craving for more businesses.
If we choose a freezone like .. lets say for example AJMAN Freezone
Govt. fee we pay go to ajman freezone. So its in their interest to help us.
If we go to a consultancy , we have to pay Govt fees to ajman freezone + consulting company fees.
Having consulting company is good if you dont have time to prepare documents and stuff.
If you are willing to spend some time , that consulting fee can be saved.
Consulting firms try to make money off us most times. I have had bad experiences.