I've been there, it was chill, I was not in a position to know otherwise however....I just walked in, had ticket scanned, hard ticket, and went right in, about 3 songs in, to 3.6.10. I had no cash for the parking, therefore to the convenience store ATM i went.....shoulda known better...missed the 3 songs to open. Great energy to first set. Good sound, great crowd, good band listening and playing I thought.
I would encourage you to listen to what you're feeling while you're in there. Pay attention to your gut and the folks around you. You'll be alerted if something changes that you need to know about. And if it doesn't feel right, leave the area for a bit, and come back after bit. No harm in taking a break from a bad environment. CO in general is not a bad environment, nor the front range, save for a 2-3 bad mental environments, and you can feel those out easily enough, to know where they are, and if you want to tolerate abiding in them for very long, or not. Boulder not a fun environment in town, somedays. And CO Springs, same, if not more so, anecdotally. Other than that, and even in those places, people are pretty considerate and helpful, here as everywhere, even today. People help one another on the road, in accidents, in situations where CPR is needed etc. They just do, I don't see that stopping.
My impression of CO and the Front Range scene is that it is clearly tolerated, part. considering the amt. of $ involved. The hijinks are tolerated and the fans and the inevitable few getting out of hand. The stuff above getting wasted and some vending, perhaps is not tolerated. Though, try enforcing it, with approx. 6-8k capacity at the 1st bank.
In 2010, they were not undercover, nor really seen in the crowd, on the floor. There probably were more in 2011 though, they stay abreast of what is coming into what venue and staff accordingly, thats nothing new here or elsewhere.
Worry about it, no. They were there, but they were tame, and overall friendly, and few and far between. The most I saw them was with the lights on as you came in, and then as you left, and it was damn cold that night.
They were also there, and this was my observation: in front of us, they pushed through the crowd, ahead of us, which was about 5-10 "rows" on the floor in front of the soundboard, directly in front of Phil, to bust someone for something. They were however shining the flashlight on the person's waist, from a ways off, so to have missed a flashlight on person being observed......you'd think that would be hard to miss.
I thought they were overly aggressive pushing and slamming through the crowd like that, and why is it always these meathead looking 'roid rage fellas that they hire for security? Saw it once at a Buddy Guy show too. And a Maceo Parker opening set for DMB. But, overall, the vibe reigns supreme. And guys like that, even on security, in a crowd like that, don't blend in. First of all, they are under 6 ft tall usually, and about 230 lbs +. They stand out. And People there are legit and look out for you.
Example, that night, for me, if you wanted to make it to just behind the rail, you easily could have, not that the band would've really noticed you, these guys are quite focused on listening and playing and being in the moment. But the crowd watches out for you, and tries to be considerate, even on the Frenetic Front Range and even the event staff, i found, in the same uniform as the aforementioned meathead ex wrestler, to have been thoughtful, and considerate.
All that said, there will be the usual contingent of young'uns there who likely will be in it for the party only, and could care less about you. Plus the usual 5-10% of the crowd who, with means or not, will attempt to use those around them, if given the chance, the strong attempt to dominate the weak. Until they cannot.
Dont' do anything stupid, rash, or too silly, or reckless, for yourself or others, and you have nothing to even think about. Same as anywhere else. The basement thing could be an adjacent building, I have a hard time believing there is a big open area under that place. It sounds like some puffed rave someone repeated, Broomfield is the city that will be hosting it.
They're not perfect, but I would prefer them over DPD or some place out near Denver Intl Airport/DIA or Co. Springs for example. Also, the grace, mod. amenities, parking, and ease of access, by bus, car, or ride share to get to First Bank, not to mention the 5X capacity, makes me glad that Phil fell in love with the 1st Bank center, because the Phillmore on Colfax would be an easy show to just skip, for the drive alone, or the 1.5 hour bus trip from up the turnpike for me. These shows should be fun, and mostly full houses. Even Sunday.
See you there.