I share your shock. That was me last year. My first convention for ages. I was looking for the platform and flowers, remember years back people could buy the flowers after the convention. I said 'where's the platform?' My friend said 'we don't have one anymore, it's all on video.'
Then we stood up to sing and I thought wow, everyone knows the words until my friend nudged me and pointed to the karaoke style video they were all singing from.
The music has gone all poppy. I remember decades ago being at Twickenham and one of The Shadows (the band) had come into the truth and he jazzed up a lot of the songs and they played them in the intervals and us kids thought they were brilliant but after the convention we were told 'THAT will not be happening again! It's disrespectful to Jehovah!' And now they are doing it and music videos too!
The walkways had people and tables with card machines so you could make donations.
I was just so shocked at how it had changed.