My ports are glass, so static and dust aren't serious problems. I occasionally clean them with lens cleaning solution and a photographer's chamois cloth. I don't know what you would use for acrylic.
Covers for the port back opening are important for storage and travel. Also useful are front port covers - you can get them made out of neoprene, sort of like a beanie for the dome port, with "ears" - loops of shock cord - on each side to hook over something sticking out on the housing to hold it on. Keeps down avoidable scratches topside, especially when a lot of cameras are being loaded in an RIB, etc.
Travelling, the dome port goes with the housing and laptop into Pelican case with appropriate voids made in the pick-foam. (The dome port sits over the laptop.) The neoprene beanie and back cover are both kept on the port when it's travelling the the case.
Frogfish