Marriott had a big devaluation earlier this year. Platinum members got a bump up to 50 % for the point bonus. Lounge offerings and free weekend breakfast (an unofficial benefit) in many US FS properties have been cut back. Some of the overseas lounges have had cutbacks as well (in certain European properties outside of London and Paris).
EEOs (the buy one get one free coupons available to gold and platinum members for weekend stays and dinners at participating properties) are now online only, but you can print and use multiple copies per participating period.
Get the Marriott Premier Visa card if you do not have it already since it gives 15 nights a year towards elite status.