What if "fantasy" was real?

Hello everyone, it is my first post and after reading the rules I hope I'm doing this correctly.

In my story my MC lives in America 2022, so the normal world like what you and I live in. Then the Veil that separates the normal world from the fantasy world is fading and portals/windows are opening up. My fantasy world is going to be extremely magical/mythical. There are dragons, unicorns, people who look like human/animal hybrids, small pixies and gnomes, elemental sprites, human sized fairies, trees that can come alive and talk etc.

I have tried to think a lot about how a person in todays normal world would react if they looked up and a portal opened and a dragon flew out and around in the sky (not damaging anything) then flew back in before the portal closed. I feel like our government might try to conceal it and if people recorded it they might blame it on AI. I also think maybe the world would just fall straight into chaos but I'm not positive.

I believe getting other peoples perspective on what they think would happen in todays world would greatly help me write a more well rounded book because it would be based on societies (all who answer) perspective vs just my own imagination.

I'm also wonder if a bunch of smaller portals showing the "fantasy world" how would you personally feel if you seen something like that? Like the mirror in your bathroom switched to a mythical looking forest and you seen a unicorn or pixie flying around then it vanished. Would you tell people you seen that or think you were going crazy? Would the normal world fall into chaos or would people be intrigued and want to go over and explore etc?

Any thoughts on this would be so appreciated.