Personally I would write a letter to Marriott regarding the Tysons Corner property. Also they should have honored the MR Platinum guarantee since they do participate in the Marriott Rewards program. At least you can earn points there and also redeem points there, so the desk clerk was mistaken when tellling you they do not participate. Next time call the Platinum desk during your stay and have them handle it.
Also, neither their rate information nor description of the accomodations, shown below, indicate "no service" or "reduced service" as part of this rate:
Originally Posted by Rate Rules
Guarantee Policy
A CREDIT CARD NUMBER IS REQUIRED TO CONFIRM OR GUARANTEE YOUR RESERVATION
Cancellation Policy
CANCELLATION PERMITTED
- BEFORE 1600 DAY OF ARRIVAL
123.72 USD CXL FEE
RateInformation
A CHANGE IN THE LENGTH OF YOUR STAY MAY RESULT IN A RATE CHANGE
Tax Information
CURRENCY RATES QUOTED IN USD - US DOLLAR AND EXCLUDE TAXES
TAX 13.500 PCT/ROOM PER NIGHT
Originally Posted by Room Information
HOLIDAY RATE*STUDIO ROOM(1-KING 1-SOFABED 1-BATH)LIVING AREA & KITCHEN * INCLUDES BREAKFAST DAILY * MAX 3 PPL