Originally Posted by
OsakaWino
I'm afraid you misunderstood the OP's question. He's not talking about a dinner reservation at HP or any of the HR restaurants, but a dinner at an outside restaurant that the HP booked for him, and he is afraid that if he cancels his accommodations reservation at HP that he might lose the dinner reservation at that outside restaurant.
understand now.
He should just explain to the HR Kyoto concierge and ask them to reconfirm directly with the restaurant (and if necessary, call the HP concierge).