u/Comptest

Hi, I very recently bought my first Omega: a Seamaster 150m Black Lacquer 38mm, 8800 movement.
I bought it new at an Omega boutique. It's a beauty, but it's my first watch of this caliber so I have a few dumb questions I figured I'd ask here since I won't be able to go back to the boutique anytime soon.

1. The watch makes noise when I shake my wrist. I think I recognize the sound of the metal disk visible through the caseback swinging left and right, but I also hear higher-pitched noises. Not sure whether they're coming from the hands or from parts inside the movement, but from what I've read it's normal so... no reason to worry, right?
2. The salesperson told me to avoid shaking the watch too abruptly, like avoiding using it if I ever golf, box etc. But is it fine for regular, everyday shaking (like expressing rage at a player on the field from my seat, shaking a Chantilly bottle, shaking a newborn to keep it entertained, etc.)?
3. When I look at the minute hand, I notice it doesn't seem to exactly track the position of the second hand. For example, if it's 10:23:30, I'd expect the minute hand to be exactly halfway between the 23rd and 24th markers on the dial. Or if it's 10:24:00 I'd expect the minute hand to be pointed exactly at the 24th marker. But in practice I find that the minute hand's direction doesn't match the second hand's position in a perfectly geometrically accurate way. Is this normal?
4. I don't plan on tormenting it for fun's sake, but just in case: can over-rotating the crown by a few extra turns have any negative impact on this movement? specifically:
   • When I unlock the crown to position 1 (counterclockwise rotation), if I keep turning past the click that signals it's unlocked?
   • When I'm changing the date in position 2, if I spin it indefinitely counterclockwise (which seems to have no effect anyway)?
5. When setting the time (crown position 3), does the direction of rotation not matter at all as the manual seems to suggest, or is clockwise preferred?
6. When I bought the watch, the salesperson told me something I don't remember exactly, but I believe the gist was that he was advising against changing the date when the time is within a certain window close to midnight (I think it was between 10pm and 2am). I can't find anything about this in the official watch manuals. Was it an insider's secret or was he playing with my feeble mind