I've been booking through Orbitz for the ease of booking my flights, hotel and rental all in one go. I did inquire the _ and they indicated I should get credit if booked through Orbitz. However, when I called the CS, they said they wouldn't be able to credit anything. If this for about 8 trips each with 3 nights stay totaling about 24 or 25 Nights. Now, I have started booking through Marriott's website for my recent travels but it would be helpful if I can at least get elite credit.