I love watchintg Gordon Ramsay, among others in his "nightmare's kitchens" (when in the US, it's really top ;););) )
I watched this a while ago - youtube.com/watch?v=0f-j1ctaQqw - Marcus Wareing is going to work at 7am and isn't getting home until after midnight. The documentary is worth a watch - those guys are busting their guts to try and win/keep Michelin stars, and even despite it all, Wareing still hasn't won his 3rd star...
The OP would be well advised to watch this if he wants to understand just how difficult it is to actually run a restaurant.