A "full service" carrier is not allowed to get anything wrong in flight especially premium cabins and rogue crew members should be reprimanded, if not even demoted. I would ask for (and not be embarassed) compensation and not feel in slightest little bit guilty.
Should it be so then that humans should be perfect as a minimum? Let us severely punish or slap around the head those who make mistakes, no matter how minor.
Wow...I'm liking this new society already.... (short version: dumb statement and hypocritical)
Mistakes are there to be pointed out because we can always do better, not because perfection is a minimum benchmark. And there is a
minimum service level expected of cabin crew - agreed - and it must be met.
But this all detracts from the OP's question - a gimpy IFE and a lapse in the service with respect to the water bottles. For the IFE, I'd probably register a complaint because that aircraft is expected to have AVOD, not loopback IFE. Even if the engineers spent 2 hours (ha!) on it and couldn't get it going - tough. Yes these things do break down; too bad it broke down at the wrong time (just like crashes of aircraft around the world, it's unfortunate that that engine had to fail just then or that pilot chose the wrong day to lapse concentration and line up on the wrong runway - we will blame them all the same, however, because our society functions like that). Whether this is something that QF should proactively compensate is a whole different issue (and I believe it has been done before), but it probably wouldn't hurt to write in if you want something back from them.
As for the water bottle issue - yes a lapse in service but in my view that is minor. You may view it as major; perhaps you'd like to tack it on the same letter as the IFE complaint. Going to the galley and asking for some water is a minor annoyance but not much more. Now ignoring the call bell is something I might tack on as another complaint; this one with slightly more weight.
Apart from that, the rest of the OP's post suggests that the rest of F service was delivered. That doesn't suggest that a complete refund of points is due. Had the service been so bad, yes there would be grounds (you'd need a lot of major faults, e.g. seat awful, cabin crew very rude, no food loaded, or not enough food loaded, IFE completely inoperational, no amenity kits, etc. etc.). It is unlucky when faults occur but to get a full refund of points in my opinion you'd need a lot to be wrong (a full refund implies a near full loss of delivery of service); but you can write in to QF applying for compensation for the faulty components, if you wish.
I am still a little slow and yet to provide QF with appropriate feedback for what I believe was the worst ever flight I experienced and supposedly a trip of a lifetime with my father travelling with me overseas for the first time.
More like very slow - your argument holds a lot less credence the longer you lodge the complaint from the time that it happened, because it's harder to dig back and do the accountability matching. That someone who complains extremely bitterly about something and do not tell those responsible is also a mistake.