Sounds like it will be a good show. I saw Aussie a few years back at a small venue, probably holds less than 2000, maybe even less and 1500. It was just such a cool feeling. You feel so close to the band and the music sounds amazing, like its wrapping around you because it has no where else to stretch to. I'm a guitarist so I could tell sound was different. It was more clear and vibrant. The effects were good too because they used a lot of smoke and lights which just radiated off the walls and eachother. The smoke just floated around you until you felt like you were in the middle of something crazy. Its definitely toned down from a regular size venue seeing as how they couldn't use the same stage equipment (except for the inflatables!). All in all, a different type atmosphere, but for that you may enjoy it more. Hope you have a great time.