My second time at the Orpheum and overall I have had good experiences. I have only been here for music concerts. The outside/inside is pretty classy/they are known for their big sign on the front state street entrance. Once inside, security is very thorough- but I would rather have them more thorough that not! There are many bars on different levels. Alcohol is pricey, but no more pricey then any other type of venue. They will usually fill up your water bottle for free after you purchase the first bottle.
The inside is pretty neat from the old chandeliers and curtains- very old school and vintage looking. The music was loud and the video on the projector screen during the concert was clear/easy to see. The general admission is usually set up so that there is a large open area in front of the stage for standing. There are plenty of seats in the back or in the balcony to sit if you would like. The hallways to exit are pretty narrow, which can get to be pretty loud/hot/packed as everyone is trying to exit, but it is usually is pretty quick to leave. There is a merchandise table usually up front, and there is a coat check as well.