As I remember when I was in Hamburg before covid time it was great experience. Even considering that it was November but me and my friends we're lucky enough with weather and our time schedule.
I even wrote several posts on Hive about my travel to Germany in 2020.
Can you share with us which app did you use to walk around the city?
That sounds cool. I didnt expect to find such a cool vibe to the place as I did and with some good weather, I think you are pretty much guaranteed to have a good time. I will need to check out your posts about your visit.
I used the https://play.google.com/store/apps/details?id=de.eos.uptrade.android.fahrinfo.hamburg&feature=nav_result app, which allows you to buy your tickets online and without any stress and a little cheaper. The only thing I would say is they should add in the tram "direction" to ticket suggestions so you can find your way even more easier, but you will find your way around no problems.