I'm thinking of covering up the cameras while staying on family property
Why are you thinking of doing that?
I am afraid to let the video show what I do in my own place since I am pretty introverted.
If the owners want the cameras to record reasonable surveillance video, then you should leave them alone. They might think you are up to something shady if you cover them.
What, you're afraid I might try to hurt them.
I'm not really afraid of what you might do in your own private life, but I do think that the owners might suspect foul play if you cover up all of the cameras. It sounds like these cameras are reasonably placed to prevent intruders from entering, so you should just leave them alone. Your own privacy inside will still be respected.