1. That one's pretty interesting. 2. Meh. 3. Tipping is probably just a courtesy you do everywhere because of a lot of the people and places you interact with, so it's there just for you to spend more money. Same with the Cafes that you can sit in where people will show you Pokemon to register in the Dex. 4. Sounds like something to do with the Looker post-game quest considering the Train Station is important to the completion of it. 5. I swear that when I ran into that the other day, I later found out what to do in that situation, I will need to check on that later 6. Nothing to add on that one. 7. The Legendaries theory plays into that. 8. Sounds like a Cryptid or other such reference to me 9. Yeah I don't know what to say about that, but I thought I heard another NPC say that someone was releasing Pokemon to play in the plaza.