How should I get this Red Submariner ready for wear?

[87jj]

Going through my grandfathers drawers when we found a Rolex Red Submariner. Didn’t even know it was a valuable watch until my mothers friend told us that it was. It’s probably been sitting in a drawer for 20+ years, and it has some scratches on the crystal and it’s missing the band and the pearl above the 12. It makes a weird noise when I shake it, reminiscent of a bearing that hasn’t been oiled, but when I stop shaking it the hands continue moving, so the insides are still intact. I just want to know what I should do to make it wearable, and what I should do about the missing band. I posted to a reddit thread and they told me not to send it to Rolex, and instead to a watchmaker like Bob Ridley. Is this a good idea, and are there any closer Rolex repairmen to the Miami area? Thanks!
(Sorry for only having one picture, it’s currently in a deposit box. I’ll update with more pics if you guys want.