Since I'm from Europe, the only Celtic game I've been to was in Italy back in 2012 when they played against Olimpia Milano. I got the seats at the back of the arena, but throughout the game I slowly moved closer to the court (there were enough empty seats). By the final buzzer I was standing on the court and we made a tunnel with some fans, through which the players passed. After the game I went out back to wait for the players by the bus. I got lucky and got Garnett's and Rivers' autograph!!!
My wife and I are planning on going to USA soon to see a game (I said I only want to see a playoff game). She's pretty bummed that Kyrie left, she thinks he's cute and just got his shirt. She asked me the other day if she has to burn it now haha.