I propose Saturday 10th July for this trip. I did not realise that Sunday 11th July is Euro 2020(2021) final day. Allowing for keeping crowds low but meeting up, I propose getting to Canning Town station (DLR or Tube) by 10:30 AM, walk through the new complex, take some photos, refreshments at Trinity buoy wharf (toilets are also on-site), then as if gets busier around 12:00-13:00, move somewhere quieter or head back. On the way back, take a quick look at the Eco park, then back to the station.
Hi Ian, would have been interested but sadly cannot make - attending a 50th Birthday.
But good to know the location and will try to get up there some other time.