Tips for maintaining my first vintage Omega?

With the help of some lovely members on this forum, I bought my first-ever automatic watch from another member: a vintage De Ville.

First wanted to ask, is it normal to be able to hear something moving inside the watch when you move the watch around? I don't mean the ticking. Even when I hold the bracelet and crown steady and tilt the watch back and forth I can hear a very slight sound inside the case and am wondering if that's normal. I figured maybe it's due to the pieces that "charge" the watch from regular movement.

Second, I've never owned an automatic watch before. It's been recently serviced, but are there maintenance tips I should know? Anything that might seem obvious to seasoned collectors but I would not know? I'm thinking of things like "only wind the watch clockwise" or "don't do XYZ with the crown." I've seen online that I should remove it when I wash my hands.

Lastly, I know that heavy polishing is a no-go, but I've usually seen it discussed as polishing with a machine. Is a simple, light rub down of the case with a microfiber cloth and a tiny dab of flitz or simichrome also a no-no? How about the strap?

Nice piece and welcome to the forum - Echo Dans points - would also avoid any high impact sports like golf etc has ability to mess up rotor

Hello Johannes. As for the sound, I guess it's a 1012 inside that is verry quiet. If you can hear a abnormal sound it may be the oscillating weight rubbing on the back.
for winding, the crown actually wounds clockwise but the slinding mechanism allows you to move the crown in both direction safely.