Generally speaking, yes, when you sign up for FE you plan to put a little something -- can be very little! -- in each FE at least once . . . however, because a few people were worried about how many would participate and made noises about breaking up the list (which, to me, is sort of not in the spirit of the FE) I said that you only agreed to have an FE up. However, the basic idea, of course, is that you leave something at some point, and in return, find lots of fun surprises throughout the cruise! A few, however, may just give to their floor or something but we are not the FE police and will not be keeping track!
Maybe a little less . . . the PMs are slowing down quite a bit and I plan to make the list (if not the cabin numbers!!!!) more or less "final" by the beginning of June so that everyone knows how many to plan for . . .