Granted, none of these things impact me at all, I am from the US and I don't know anyone from outside the US that would ever come to the parks with me.
Hi Angi,
technically that is not true

...
Remember me - Gabi from Germany

? (the one on the far left)
I've had the pleasure of meeting you and your family on May 31 at the AK-meeting during the DIS 20th Anniversary.

Unfortunately I missed you during the Epcot-Party - carried the promised Gummibears for your lovely DGD with me the whole night ...
But to add to the discussion - I would never risk carrying my passport around - especially not in the parks - it stays safely at the hotel.
Which means no alcolhol for me - but luckily I don't drink any - so no problem here ...
But sometimes I need an ID - i.e. when paying with a card - and my "antique" drivers license is not helping me with that -
because it's similar in Germany to what was mentioned earlier here
Not sure if DLs expires in the US, but where I live (France) and many countries I know in Europe, they are issued once in a lifetime.
Here, DLs are not valid forms of ID for that reason (they're a fun way to check how everyone was dressed in their 20s, though).
Guess the picture on my DL would prevent me from ever getting any alcohol at all - well, DL was issued in 1978
After years of being afraid losing my passport dragging it around for ID-purposes, I decided to rely on my german "identity card" - which is similar in size and look to a DL -
and is in fact in Germany considered more "valuable" , because unless the passport it has your address on it.
Usually it workes like a charm - but for aforementioned reasons I never put it to the test at WDW ...