Paris Shenanigans
 

Let's say, completely hypothetically, I was to, hypothetically, travel to by going to hypothetical Paris next year and hypothetically was required to sneak into certain hypothetical parts of the Paris Opera house how would one recommend I hypothetically do such a thing?

I've snuck into Westminster Abbey through walking through the back entrance and waving to the guard like I knew what I was doing and I went for a tour of the closed parts of Nero's golden palace by straying off from tour guides into the darkness, hypothetically of course, but I think I'll need something bigger here.

How can I, hypothetically, evacuate such a building for a while?

Find a fire alarm without a security camera. Done!

Really now, why not meet a cast member at a bar somewhere and become friendly and see if you can use that to get in?

The problem with firealarms is they'll have firemen come and the place I need to go, hypothetically, is one of the key places they'll look for fire.

And movies have taught me that all french people are snobs.I don't want to live in a world where movies lie to me.

Wow, so I'm hypothetically not the only person who may or may not do these kinds of things, just to give an example?

That could possibly be the coolest thing I've ever almost heard!

Of course you're not. It's not a holiday unless you've broken into places you're not allowed in search of mythical treasures (like for a completely random example The lost score for the "The Triumph of Don Juan" rumoured to be hidden under Paris' opera house among spooky dungeons, cunning trap doors and a maze of corridors).
Not that I'd know. Cause I only consider such things as intellectual thought exercises of course.

....."In sleep he sang to me,
In dreams he came!
That voice which calls to me,
And speaks my name...
And though we dream again,
For now I find,
The Phantom of the Opera is there...
Inside my mind..."

Don't you ever sing that abomination around me ever. Andrew Lloyd Webber is possibly the first sign of the Apocalypse!
LeRoux is my friend.

Pfft! The musical made no sense! The novel (while highly silly and overblown for the most part) was infinitely better than the musical. They took out the best characters : The Persian and the Inspector in the musical. And Erik and Christine's actions make no sense anymore!

Musicals and sense are not related in any form. People randomly burst into song. Sense is not present.