Hilarious Dream I Had Where I Was In Japan

So last night, I had a dream that my cousin, a fellow otaku, was like "I'm going to Japan" and I'm like "can I go with you?? I'll even eat the food there! I really wanna go!!" And I mentioned the food cause I'm kinda picky with my food. Anyways, so he's like "sure!" So we go there, and we have this guy with us that's showing us around and I'm like "this is really cool" so we stop to eat and we order some weird octopus soup or something like that and I instantly started to regret saying that I'll eat the food. Then later, I had bought something from a merchant and afterwards I was trying to be polite and say "Arigatogozaimasu" and my tour guide was like "don't say that, you'll get slapped!" And I'm like "WHAT???" And I was so confused cause like I was saying thank you and like why would I get slapped??? Then I woke up!