I'm not from Sweden, but this year on Victoria's birthday on 14th July the gates of Solliden were opened at 11.00. Victoria, Daniel, Estelle, the king and queen arrived to the courtyard at about 14.00.
The Victoriadagen concert is held at Borgholm Sports Field, the royal family arrived at 18.30 and the concert began. The tickets cost in 2014 340 SEK.
The program of Victoriadagen-concert and other events (not Solliden) will be updated to this website
Victoriadagen | Victoriadagens officiella hemsida
The program of Solliden Palace will be updated to this website
http://www.sollidensslott.se/en/