Thanks Socrates. Do you have any idea what type of rate this is and what they would expect in the form of ID? The details I provided were taken from the details on the web site under my account. The confirming email only said:

PROPERTY PROMO: 74.00 per night.

Applies to rate(s) above:
Additional fees may apply.
Rate(s) Quoted in: US Dollars
Plus tax when applicable.

I could just show them this which is the actual confirmation I would provide anyway. Although $74 is not a killer deal it's about 30-40% off the best rate we could otherwise find.

Thanks for your help.