Went to the Flyers/Sabres home opener this month and had a great time. The arena staff are all very friendly. The arena is nice and clean with a welcoming environment.
There is not much to do within the arena however compared to others. Bathrooms are small and lines are usually long. The same goes for food.
I was a little surprised how tame and quiet the crowd was for a home opener. Sold out crowd that only made noise when penalties were called or when a goal was scored. Especially for a home opener. The first 10 minutes of the game was dead silent, you could hear the players talking on the ice from the 300 level.
Parking was one of the best i've had at an arena though. $15 right outside the door, 60 second walk to the arena. Got out of the parking lot in less than 5 min too.