At the moment my house is decorated with a bunch of Nuka-Cola trucks, cigarette cartons and teddy bears. If I buy a theme from Moira, what'll happen to the existing decor? Will it disappear? Should I tidy up before I buy?

The smart thing is to tidy up your decor. If you plan on adding alot of personal touches, it's best you find a theme you like and stick with it. I stick to Pre-War Theme, it feels very nice and tidy in the Megaton home :laugh:

I like Loveshack myself, but I'll tidy up all my teddy bears before I invest I think. I've got dozens, so it'd be a great shame to lose 'em.

You won't lose anything you have laying around the house, but the items you do have are likely to get badly knocked and scattered about when you buy the theme. The Love Shack theme is one of the worst offenders for this, too - it adds a lot of clutter items like booze and chems to all your shelves.

Ah I see, thanks for the answer, I guess I really will have to tidy up then.