How do you protect new paint during restoration?

I would talk to the body shop your picking it up from. Get professional advice not keyboard gossip. I can tell you that if you picked it up from me. I would tell you no cover at all or only very light breathable material. Fresh paint still has solvents that need to escape and depending on the product and the cure cycle can still be soft. Then during assembly of parts and panels. You can use tape to protect edges but it has to be removed. You can't leave it on for long.