I was faced with somewhat of a dilemma recently, when I had three Y class tickets for JQ7 MEL-SIN (different dates), which I must have purchased while being dazzled by low fares.
As I wasn't particularly thrilled about flying the 787 in packed 9-abreast Y, I was contemplating how I could get out of it without just walking away. I took a chance with the first flight, and ended up in seat 10A with an empty seat next to me. Not a bad experience, but very lucky I thought, and probably difficult to replicate.
I was still wondering what to do with the other two tickets when, out of the blue, I received an email from JQ advising a schedule change of 24 hours. I immediately responded with a request for a full refund, and lo and behold, I actually received the cash in my bank account a couple of days ago. Phew, that was very lucky, I thought.
Regarding the third and last booking, I decided to look at various options, including upgrading the ticket to "business" class. I was playing with a few different dates, and found one, which fitted in with my future travel plans, which only required an additional payment of $150 all-in. I jumped on this straight away, and I'm now in the happy position of having no outstanding tickets for JQ Y class on a 787, a situation that I intend to maintain indefinitely.
However, I really don't mind the JQ 320's for flights of up to 3 hours, so I'll continue to book these, as and when appropriate.