Just to clarify (trying to find a nice way to say this)
You really aren't a repeat customer of Marriott, instead you're a repeat customer of Priceline.com (assuming you're bidding for your stays)...yes you're getting good service but they give that to everyone.....if you're lucky enough to continue getting the same hotel they will get to know you and will probably be willing to do small favors for you however they might be willing to grant larger favors to a repeat guest paying a non wholesaler rate regardless of status...now with all of this being said wholesaler rates do not earn points or general night credit in MR