Dear,

Normally the duration of tourist visa is only 1 month and likely to be extended upto max 1 month again. Getting visa is not a big issue but seems to be little bit expensive. Pls contact any service providing agency or Hotels.

In the best of my knowledge you can apply for Family visit if and only if you have a valid Residence Permit Visa. But probably they can come under business visit visa which is extended upto 3 months.

Best of luck