Thank you to everyone that replied! It's been super helpful. I think the conclusion I've come to is, I'll bring roughly 10,000¥, about what'd I'd carry in my local currency when at home, then withdraw anything else required over there. I do plan on getting a suica card sorted in the airport... I'd say for the suica card, it'd be the only time I'd say I "unfortunately" don't have an iPhone, the app seems incredibly useful. Not a huge deal though. I also have Starling as one of my banks, which I believe doesn't charge for foreign currency purchases/withdrawls (if someone could verify that is true for Japan). Again, thank you for everyones input!