the capital of Scandinavia is one heck of a place....beautiful, educational, fun, and expensive too:-)
I would like to make those traveling here to Sweden know they are almost "cash free" when it comes to eating establishments and many shopping facilities. Make yourself aware of this when you try to take out cash (koruna). Your "plastic" will be the preferred mode of payment.
Avoid buying beer or liquor if you can...super expensive. Shop at the grocery store for some of your lunches so you can easier pay for a nice dinner out. The Royal Palace and old town are beautiful but it is the VASA museum that will knock your socks off!!!:-)