Originally Posted by
MSPeconomist
Some hotels will change the Bonvoy number on the room occupied (and to be paid) by the other person, but the hotel could insist on canceling and rebooking the room at current prices since hotel rooms normally aren't transferable and minor changes often result in cancellation and rebooking at new rates.
This is what I was told in Bali earlier this year. The Westin said they had to cancel the previous booking and rebook under my number.
Which was fine, but I didn't want to pay the extra so I didn't in the end, so didn't change the booking.