Hi adventurous,
Many other reasons as well:
1. Your reservation is a full award reservation for a room other than a standard one.
2. Your reservation is booked through a third party agent.
3. (Which isn't a reason) You have a PM!
Thank you and have a nice day!
[email protected]
Thyetus Lee | Online Forum Coordinator(AP)
Starwood Customer Contact Centre (AP) Pte Ltd