I am considering booking a ticket. My hesitation is - What if UA switches this (post launch date) to MEL-SYD-LAX? [ this adds a stop to this route, and therefore changes my travel experience. In this case, I would want a refund, because I would rather then fly QF's MEL-LAX service.} I am not a lawyer, but materially, there is a difference between MEL-SYD-LAX and MEL-LAX. 1 stop and longer travel times. - UA switches this from a 787-900 to 777. In the past, I was able to get a refund when UA changed planes for JFK-LAX from ps to non ps. Could I get a refund in both cases?