Perhaps I'm off-base here, but if it were an issue as to whether one was traveling on official business or not...wouldn't marriott.com mention it? I'd think so as to prevent those who are govt employees from using it if it were not official business... They don't mention it, so I assume that it is not a requirement.
Personally I've never done personal travel on govt rates (I work for the govt) because I can typically find even cheaper on priceline. If I were so inclined to book a govt rate on marriott.com I would check any restrictions/etc and if it didn't say 'show travel orders' I would just assume that none are required.
I have no problem with them restricting gov't rate to 'official biz only' but please say so if that is the intent. I am sure most would feel the same.
http://marriott.com/specials/govtmil...&promotion=GOV
Military Discounts
Military Hotel Discounts and Government Hotel Discounts
We're honored to welcome government and military personnel as our special guests. Whether you're traveling across the country or around the world, most of our 2,700 Marriott hotels offer military hotel discounts and government hotel discounts - which are in most cases at or below your US Government per diem.
Marriott's government and military hotel discounts are offered to:
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All active military personnel
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Marriott brands offering special military hotel discounts and government hotel discounts include:
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