You can stay in Fiji max 6 months as a Visitor. First, you can get a multiple-entry Visitor visa with 4 months validity for the first entry and you can extend the validity of your visa up to 2 months.
Only Fiji citizens and people on valid work permits or exemption status can visit Fiji without a return ticket.
Yes, Sponsor Letter can be from a local or a visitor holding valid permits in Fiji.
Your partner and children can apply for a co-extensive residence permit.
No, you cannot. You can apply to Work Permit after graduation.
Student Permit can be valid max 3 years, min 1 year.
Yes, if you are studying at primary and secondary schools.
Australia, New Zealand, Canada.
Medical Insurance is not required to travel to Fiji.
The Work Permit that you were granted also allows you to reside in Fiji.