First Bills game ever! Advice on the Game Day Express bus? Advice, generally?

I've been a Bills fan since Super Bowl XXV when I was nine years-old... and I'm FINALLY going to my first game on Sunday! I'm so excited, but would love any advice you might have. Particularly, I'm wondering about transportation. I'm flying in on Saturday and staying in a hotel. On Sunday, I planned to take an Uber to Eastern Hills Mall (which is a few miles from my hotel) to then take the Game Day Express bus to the stadium. For the return trip, I planned to do the reverse.

I'd love your thoughts on the Game Day Express bus... and any advice on taking the bus, transportation generally, or anything else you think could be helpful for a first-timer. Thank you! Go Bills!