alien tourist

OK I'll try think with an alien mind. In order as you've posted them.

- Not many people there and unnatural looking stones in rows. The stones are obviously markers of some kind. There is a woman standing next to a stone crying. Not many people around. Suspicious and possibly dangerous place. Needs further investigation before approaching too close.

- Observing from above while cloaked. Don't know this behaviour , never seen it before. The Humans seem to be focused on the few people in the open area. I've heard rumours of Gladiator behaviour on Earth. Maybe this is it. The sound seems to come in waves and the emotion detector also senses emotion coming in waves. Possibly a highly volatile situation and dangerous especially considering the amount of them in one place. Requires further investigation before approaching too close.

- similar in many ways to the stadium. The activity is more confused and more people seem to be on the playing field. It's hard to tell way these Humans are exchanging material things that their bodies mostly do not require. There doesn't seem to be one clear reason why they accumulate here. Suspicious and possibly dangerous. Requires further investigation.

I'll give the politics a skip. that would require a book. :-)

any alien with the technology to come here would either invade or go somewhere nicer for holidays

Hahaha its funny you have to clarify What kind of aliens. I think about that too. They come down and see all of us being useless with our gift of primitive technology mostly for entertainment. As we all worship glowing screens with cat videos, porn, and social media.

I believe there are some

!? TAHW !? 👽