Hi Jan,
Anyone should be able to see the shared calendar, I only add permission to add events.
If you follow the instructions to add the calendar to your own, using the Apple/Android calendar app, look at the month of June, you should see events on the 10th and 24th June if it all works.
With regard to Trinity buoy wharf, the earliest date could be weekend of 19th/20th June or 3rd/4th July. There is limited parking around there, so my preferred option is the DLR (or Jubilee line) to Canning Town and walk from there, over the river Lea, past the English National Ballet and other new builds and finally to the light house at the wharf. Google maps tells me it is 1.2 miles. There is an ecology park nearby, that might yield a few photos.
I have a few photos from my original visit back in 2009,
https://www.flickr.com/photos/ianstedman/albums/72157622420123012The other photos are from Poplar and Limehouse.
I'll check TFL travel for some of the dates, don't want line closures making it tricky to get there.