hello! I will be traveling to sweden for the first time, heading to Uppsala for business for a meeting june 13-17. My 12-year old son will be joining and we hope to extend the trip until around June 20 (flexible with date) to see a bit more of the area/country. We are both pretty outdoors oriented and do not want to rent a car. Is it too long to just stay in the Uppsala and Stockholm area for the week? Should we plan to visit another city/location accessible by train? Or do an overnight kayak/camping tour to the archipelago? Welcome any tips or recommendations.