Brake fluid is hygroscopic and will accumulate water over time despite being in a nominally sealed system. Water in solution with brake fluid noticeably lowers the boiling point which leads to issues under repeated braking (e.g. down long steep hills) as the fluid boiling means you lose braking capacity in that circuit.

You should ideally be changing the brake fluid every few years (2-3 being the typical recommendation) and that applies even if the brakes are used less often.

Electric cars do have oil that will ultimately need changing but it’s less exposed to contaminants than the engine oil in a internal combustion engine and therefore will last a lot longer. EVs typically have a reduction gearbox and differential and these will require oil changes in a similar fashion to a manual gearbox or differential in a ICE vehicle - i.e. barring exceptional circumstances it will last long enough to get out of warranty but don’t believe it will never need changing.

Best if one develops the habit of putting the drink in the freezer then immediately starting a timer on the phone for half an hour or so. Doing that before you do anything else means you actually get to have the nice chilly drink after the inevitable distraction.

I have one in my wallet - they are quite handy for cleaning lint out when the phone charging port inevitably collects enough to be annoying.

The basics are easy - half an hour with someone who knows what they"re doing should be all you need to get out and about. Getting to the point where it’s instinctual and you don’t have to think about shifting is probably beyond the limits of a short trip but depending on how much driving you do you can be fairly smooth within a few days.

The main risk you run with learning manual is that once you get the hang of it it spoils automatics for you - you might end up having to buy yourself a manual car to avoid being annoyed by the missteps autos tend to do.