You can buy the tickets online to visit the Royal Castle of Stockholm at this web page. The page comes in Swedish by default, but you can switch to English by clicking on the UK flag icon at the top right. kungligaslotten actorsmartbook se

I would advise that you check their website which should have the most up to date information.

Not sure. I would advise you to check the website online.

Yes you can

You sometimes have to wait to get a ticket, but other than that you just walk thru at your own pace.

Sarò stato sfortunato io. Ma privatamente (intendo non in gruppo organizzato) ad esplicita domanda mi è stato risposto che la guida in Italiano non c'era, è le audioguide in Italiano, almeno al Palazzo Reale non ci sono.

Si vede dall esterno

You will definitely need the whole day to do all that! And best to get your tickets on-line ahead of time if you can, else you will spend more time in line. It still takes awhile to get through security. Watch the guard by the Cannons - pretty nice. As for events, make sure to look at the on-line calendar and see what is going on. This may change as you get closer. We had to come back on a Monday morning to the Chapel since it was closed for a wedding function the day we were there and so we would have missed it otherwise. Fortunately the tickets were good the next morning by our stamping them on the way out.

Yes Gabriel it is allowed in most rooms as long as you do not have your flash on.

12:15 καθημερινά 01:15 Κυριακές και αργίες