It was a super cool experience, I had been to sporting events in NA before but never had got to go to any in Europe, let alone my favorite football team.
Although for me it started even before that as going to the game, especially as we got closer to the stadium it was cool to see all the fans who tend to be more vocal and more decked out (at least at that time, now fans in my area do tend to wear more jerseys than they did) coming together was different.
I now for the most part sporting events are similar but I felt like that was a very different experience from what I had gone to in my life. I have since been to many other sporting events, some with bigger crowds, so I am sure if I went back it wouldn't have that same feel that the first time I did, plus being younger likely makes it seem more grand as well, but it is still a fond memory and I am glad that I got to experience it.
I hope once this Covid stuff calms down, or hopefully ends, that I will get to go to the new stadium, hopefully with my children with me.