Wait til it goes quiet up there and then start just wailing on the ceiling every 15 minutes

It's 100% dependent on your field. Some it's basically required, some it's a bonus, and some it's not really important. The important question is what you want to do, and then people can give better advice

Gritty? Unsettling?

Can confirm that DVTs are exactly zero fun, do not get them if you can avoid it.