According to the Hilton HHonors T&Cs there are no stay credits, no points and no airline miles being credited if one books with a third party website (e.g. Expedia).

In reality, most hotels give you the above-mentioned benefits regardless of the booking source.

For people who do a mattres run, it might be important to avoid hotels which do not give stay credits if the reservation is done with a 3rd party website.

Therefore, let's create a list with those hotels who do not give you night credits on 3rd party bookings. Please always report hotel name, date of stay and booking source:


Germany
Hilton Mainz - 2008/01/25 - Hotels.com

Switzerland
Hilton Zurich Airport - 2007/12/21 - Hotels.com

USA
Hilton Las Vegas - Travelocity.com