Here are the Elite welcome gift choices at check-in. FYI I did choose the breakfast option initially but changed it mid-stay without any issue (to the 10% spa treatment).

Please select one of the following appreciation gifts:
Gold
- Additional 1000 Bonvoy points
- 10% of any ESPA Spa treatment (Daily)
- JPY 3000 Food & Beverage Credit (Per Stay)

Platinum
- Additional 1500 Bonvoy points
- 50% discount on breakfast at Towers for 2 pax (daily)
- 10% of any ESPA Spa treatment (Daily)
- JPY 3000 Food & Beverage Credit (Per Stay)

Titanium
- Additional 2000 Bonvoy points
- Breakfast included at Towers for 2 pax (JPY 11,600)
- Bottle of The Ritz-Carlton Champagne
- 15% of any ESPA Spa treatment (Daily)

Ambassador
- Additional 2500 Bonvoy points
- Breakfast included at Towers for 2 pax (JPY 11,600)
- Bottle of The Ritz-Carlton Champagne
- 20% of any ESPA Spa treatment (Daily)
- 2 pcs laundry or pressing per night (regular service)