No enemies, no destroyable objects.
I go absolute barebones for my maps, since realistic recreation is the goal, not action adventures.
There's a few doors and a pair of horses linked to power switches/replayers, that's about it in in terms of animated toys.
The castle was completed, but the price of doing so was being unable to complete the wall shown in the picture.
Also, there are two features I hadn't gotten around to including, because of the memory limitation.
And there's nothing that can be deleted, not without ruining the map.
I suspect what consumed the remainder of the memory was the massive mountain I had to build so you're not seeing something really wierd everytime you look towards Elsa's Ice Palace.
Although, oddly, terrain blocks seems to consume less memory then building blocks, even though they're over 30 times the size (for some of the larger ones).
This experience has pretty much confirmed that realistic world creation is far beyond the capacity of what DI can do or support.
I was planning on doing Corona (Tangled) next, but (compared to Arendelle), it's a vastly more complicated map.
If DI couldn't even cope with Arendelle, there's no way it could handle the demands of Corona.