Again, that is likely rare (if you attempt all shows) and you sometimes have alternatives like watching the aqua show from the deck 7 rock climbing area. BTW, the same thing (show "sold out" in the app) could have happened before when booking could only be done on board - the early bird gets the warm.
It will vary by time of day, day of sailing, demographics on your sailing and maybe some other factors but generally the cabin is decently insulated against noise.
Whatever problem you have is more likely an RCI IT issue (which the CEO wouldn't address nor fix) rather than policy issue. Also, other than the small comedy venue on O class ships, it would usually be rare that you couldn't just walk into any show (at 15 min out) without any booking at all.
It seems like the order of the names on the booking is what matters - the first person listed on the booking gets the offer, the second may not. That's why if you ever don't get a RU offer and have different last names on the booking, try the other one.
The non-alcoholic drink prices may be listed in the app - but usually in the $6-8 range.
The coffee question will be answered on board - ask the barista those questions and then only buy the card if the answer is one punch per drink, otherwise buy a la carte.
That seems to vary by ship and even staff - the package usually only includes soda from the fountain/machine, but some staff will also give you the can. The cup is only needed at the Freestyle machines.
While it does happen, it's somewhat rare for RU min bids to move much during the selling cycle.
For the folks that can't bid, it's unlikely that will change at 30 days out - it's something other than the 30-day limit that is causing them not being able to bid.
Realize that mods routinely delete posts in a thread (which renumbers the remaining ones) so that could have been possible - not a good idea to refer to specific post numbers in a thread because of that.