The duration of the race makes Le Mans hard to watch? So, how do you watch it? Get up late on Saturday and stay up until the race is finished. Or a few hours of sleep during the race? Or do you just watch some parts of the race and live mostly your normal life?
Last year was my first time watching Le Mans. I watched some racing on Saturday afternoon and evening. Then some sleep and watching Le Mans and Stanley Cup final at night. Few more hours of sleep to see maybe the last four hours.
This year, I don't know yet. I'd watch the entire race if my schedule allowed it, just don't know yet. If I manage to get lots of sleep on Saturday morning and get up in early afternoon, then I might stay up until they finish. If that's not possible, then a shorter sleep and try to catch as much as possible.