Originally Posted by
nydad
I am redeeming a suite award at Hyatt Regency Hakone, and I've been informed by the hotel that I still need to pay 8,700 yen ($105 USD) each for third and subsequent guests.

As long as they have 8 draft beer during the 4-7 cocktail hour it will all even out. Actually, free Diamond breakfast for every registered guest drops the beer down to maybe 4 or 5.
Either way, great property and fantastic staff...enjoy. Oh, and make sure you grab a couple kuro-tamago (black eggs) at Owakudani, 7 years added to your life for each one you eat.