Originally Posted by
craigthemif
I had one of the guys from NoMasCoach insist to me this weekend that they changed a reservation in Thailand and managed to keep the lower points rate.
That doesn't reflect my experience though so YMMV. You should always book IHG reward stays on a night-by-night basis. It's a nightmare for longer stays, but allows you to drop unwanted nights without screwing up the rest of your nights.
Unfortunately, IHG does not allow points bookings without actual points, so booking some property for 40–50k per night for a range of dates "just in case" may not be possible.