Your best bet is to take the tram No.7 near Sergels torg / T-Centralen towards Waldemarsudde and get off at Stockholm Skansen. Otherwise from Karlaplan T-bana take the bus 67 towards Stockholm Skansen.
We will meet in the Park near the Stockholm Skansen tram / bus stop (https://goo.gl/sVvC7y), it is 300m from the On-Inn.
There will be half arrows from the tram / bus stop.
Drinkstop? - Silly Question
Walkers Map? - Yes - Pram Friendly
Website of OnInn - www.skrotens.se, the link on Google Maps is outdated. They have a band playing on Wednesday night.
The seated booking is for 8pm, but we can drink before if needed, :)