In the end, the only way to keep a big EOTW bunker hidden is to either locate it so obscurely that you hardly need a bunker, or put it behind expansive fences patrolled by well-fed and happy troops with strong fighting positions. A government can do that, maybe. For a while. A movie star can’t.
This is a lesson certain now-rich people are going to learn if (may the gods forbid) they ever get a chance to try their zillion-dollar urban bunkers for realsies.

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Seriously, a swimming pool? An average California backyard pool holds around 25,000 gallons so heavily contaminated with the chemicals that keep it from turning green only a fool dying of thirst would ever consider drinking from it. And if you’re trapped down there long enough, you will be that fool. I can think of better ways to store water. I hope the bunker designers can, too. But if they could, would they really waste space on…
…a greenhouse? Seriously? Do these people know how much space it takes to actually feed yourself from a garden? Or how much time? Do they know how much electricity it would take to do it underground? Where is this electricity coming from? Where is the waste heat from all that lighting going? (Yes, even CFLs of sufficient wattage to serve as growlights produce a lot of heat.) Ever see a cannabis grow room? Wonder why all that elaborate ducting, just to grow a few plants? There’s a reason greenhouses are always above ground.
“Power technology has improved tremendously thanks in part to Tesla and lithium-ion batteries that only degrade a maximum of 10 percent after 30 years,”
How many batteries would you need to simultaneously light your greenhouse, your game room, conference room, bowling alley, media room, pool room, gym, kitchen, several luxury bedrooms, while running the extensive HVAC system, the pool pumps, the sauna … How are you charging the batteries? With that “power room?” What are you using for fuel? Where’s the exhaust going, that’s not giving away the show to the ravening mobs? Have any of these people ever specced out a power system in their lives? You’ll need to run that generator constantly, using that magically infinite supply of fuel you’ve got squirreled away. What’s the point of batteries anyway? The article never says anything about power generation.
An underground garage for your exotic cars? (I hate to be so repetitive, but) Seriously? Your priorities seem to be missing, Mr. Cruise, Sir.
If I wasn’t a looter after all that booze and high-dollar food you’d stored away down there, I’d just park a truck in front of your blast door, set it on fire so nobody can move it, and let you rot down there.