i don't know why u guys complain that the goals are gem heavy
as we can see, different steps and mastery levels give us various rewards like gingerbread table, gingerbread man, etc...
and the goals don't say "buy the stuff", they say "PLACE the stuff".
i can suppose that further steps of "holiday spirit" will give us more stuff, and we can place it to complete "family" and "taste of holiday" storylines...
... means, these two goals are not first, but LAST. we can complete them while we go through really FIRST one, "holiday spirit".
it wd be logic, coz we didn't have yet the ways to get gems from game progress.