AirBNB is not a popular option in Japan so we recommend staying at a hotel close to a metro station. We recommend the following hotel chains: Prince Hotel / Grand Prince Hotel Mitsui Garden OMO US Hotel Chains (Hyatt, Regency, etc).
We recommend exchanging cash when you get to Tokyo in an ATM/convenience store. They usually provide better best rates than the FX exchange places in the airport. (https://tokyocheapo.com/business/financial/show-me-the-money-cheapest-places-to-exchange-your-cash-for-yen/)
- Download the Pasmo to your Apple Wallet prior to landing. This is what you'll use to pay for the metro and all the random vending machines - If your current telephone plan does not include international, we have used a pocket wifi in the past. Great option if multiple people are using it at once (https://www.japan-wireless.com/en).