I have a spare room so no light leak issues. You just need to have your "on" time set for a schedule that works for you and stay out when it's lights out. I do not go into my tents for anything when it's lights out. My intake is away from any light source anyways. And honestly I'm not a freak about light leaks like most. If the light off of my portable A/C or some coming in through an intake is going to somehow mess up a genetic I have flowering, then that is not a genetic I want to keep running.
Just my opinion.