1. If you love being in the middle of thousands and thousands of screaming, crying little kids and being pushed and shoved and bumped into by strollers and people, and you love a ear-splitting decibel level of constant sound, you'll think you've gone to heaven if you go to the Monterrey Aquarium. And lest you think you get what you pay for, it ain't cheap.
2. If you try to check-in for a flight on your computer and the website won't let you asserting that you're too early to check-in even if you're not, just check-in with your app, which just might have a more accurate sense of the correct time.