The full T&C can be found at
https://www.marriott.com/loyalty/terms/default.mi
Read specifically section 4.3 (a) - 90K points is given to any elite that is walked. The difference is for $100 for a non-FS hotel and $200 for a FS hotel. Note that Plat and above also have walk coverage at RC and St. Regis hotels, but all elites have coverage for the other listed hotel brands (which does include TPSes).