Maybe I'm crazy, but my experience at the Marquee was not even remotely similar to the bad reviews here. My girlfriend and I came here recently for a show and everything was great - nice sized venue, impeccably clean, good ventilation and air conditioning, great acoustics, friendly staff and security, and overall a seamless, ideal concert experience.
I've always wanted to come here and now feel dumb for not making it a reality sooner. I know different concerts will have different experiences, but my first one was pretty darn great. I will definitely be back!