First time we took MAS Firefly and unbelievably, the staffs are very friendly and easily approachable. The cabin staffs were helpful and courteous. Felt very comfortable traveling with Firefly.
The only bad experience would be the pre-flight booking procedure and the rigid policy not allowing change of name on the ticket. I am not apt in the security procedures involving passenger travels by flight -especially after post9-11, so I'm guessing that the difficulty in asking for simple name change could be due to security procedure. Otherwise would be unacceptable to me.