Word of caution using LNF rates. The properties seem to very much dislike these rates. Upgrades not given and certainly if your original rate included breakfast at a resort then the LNF will take it away. Adding Bfst for two to the LNF rate could wipe out the savings and leave you as an "undesired" guest.

MY EXPERIENCE on LNF stays

USA JW Marriott: given absolutely worst room
USA Renaissance: no upgrade
China Renaissance: slightly upgrade room when normally given a suite
Carribbean marriott resort: no upgrade. Bfst inclusive rate not honored on LNF
USA courtyard: no difference
Marriott USA: I have one more upcoming stay in boston late summer. Will see how that goes.

Bottom line: I don't think I will bother with LNF rates again. It certainly seems to wipe out any goodwill that comes with being a platinum guest.