Not seeing any European airports but last time I flew within Europe they were cool with bringing water aboard. Also the shoes thing is something of the past if you fly within Europe.
Bringing liquids onto the plane is fine, but it’s (supposed to be) an issue with bringing liquids through security, since it could be something like gasoline or some other hazardous liquid. If you fill your bottle with water or buy a drink inside the secure area, it has theoretically already been vetted and is safe to take onboard (though I bet there’s really a bunch of security theatre happening there, too).
Not seeing any European airports but last time I flew within Europe they were cool with bringing water aboard. Also the shoes thing is something of the past if you fly within Europe.
Bringing liquids onto the plane is fine, but it’s (supposed to be) an issue with bringing liquids through security, since it could be something like gasoline or some other hazardous liquid. If you fill your bottle with water or buy a drink inside the secure area, it has theoretically already been vetted and is safe to take onboard (though I bet there’s really a bunch of security theatre happening there, too).