Hi guys

I can't find this information anywhere. Maybe there is somewhat smart here who can help )

I am rather new to KrisFlyer and want to make a Star award booking.

What are the rules...
- how many stopovers are allowed?
- can date changes be made after departure to SQ and/or non-SQ flights?
- is the ticket refundable if paid for but not used
- do SQ charge me for all fuel surcharges (ie UA doesn't)?


The routing I am looking at is

FRA-VIE(stop)-BKK-SIN-MEL(stop)-BKK-VIE(stop)-FRA

or alternatively

FRA-VIE(stop)-FRA-SIN-MEL(stop)-SIN-FRA


Cheers
Greg