In the latter part of last year I was surprised to learn of an indoor site not too far from me, F&O Precinct 13, and when I checked last week they actually run games 5 days out of 7 every week - Wednesday to Sunday (obviously evenings on the week nights).
I was pretty happy with £20 for a walk-on evening game in an old, disused shopping centre just on the outskirts of Birmingham. The site is in pretty good condition as it presumably hasn't been all that long since it fell out of use for its' original purpose. Alas of course it's no 'The Mall' and probably only 1/3 the size, but that place spoiled me for life. However Precinct 13 it is extremely easy to find and access, with loads of hard stand parking right above the site.
While the play space is pretty small, I'd say the folks running it have done about the best that could be done with what is there. There's more than sufficient wooden barriers through the whole concourse and in almost every shop to basically maximise the gameplay potential. At first there was only 5 of us actual customers playing, then a couple more showed up and some staff joined and we hit a max of 10 before some went home. I'd say 10-14 players being optimal in there since there's only really a couple of lanes. Apparently the cap is 30 which they sometimes hit on Saturdays or Sundays and it gets too stalemate-y. Grenades are allowed and I took my FRAG-C for it's first outing, which was great in terms of weight and worrying less about hitting someone with it, but having the extra shots in my 3x TRMR would've been brilliant in such a compact arena.
As with all such sites they tend to bring in the player base who want to play airsoft like paintball, so the very start of the first game I get a non-hit taking accusation from a young lad who hit me in the head "like at least 5 times" (I only wear a cap, no helmet) which had me worried for the potential course of the rest of the evening, but perhaps he did ping one off the very edge of my ear pro head band velcro that I had no idea about... 🤷♂️ Fortunately I didn't personally have any other problems like that, though one rental wondered in to the game area minus his mask then fired away in auto and argued with the head marshal over it, credit to that guy for keeping his cool and being polite but firm on that one. Overall, I felt like sometimes the boundary restrictions we often had seemed odd since the place is already very 'cosy' but they run good games and the staff were very solid.
For myself, I was glad both AEGs comfortably passed the chrono, as my very-much-indoor-themed VFC AR that I'd taken to UCAP Vendetta at the tail end of '23 had failed and I very nearly wasted a the drive/game fee on that occasion (went back in to Negative Airsoft for a power downgrade in the interim period); trigger response on it is the best of any gun I've ever owned and it sounds pretty smooth indeed. Ideal for such game types/sites. The one piece of kit I had never used before did let me down, in typical fashion, but honestly it's such a weird one it's almost funny. I've been using primarily Blackhawk Omnivore holsters for years just so I don't have to go buying 1000 different specific kydex holsters for different guns and gun/light combos and different camos/colours etc - have not had a problem so far. I think I ran in to the old swiss cheese/stacking tolerance problem though where maybe the TM M9A1 has slightly thinner plastic in the area of the rail and my old SureFire X300 is maybe a hair looser/wider than some other lights in terms of mounting. Since the Omnivore grips the light that means of course the whole weight of pistol and mag is being held by the interface between the light and the pistols' accessory rail. I presume at some point while running around I maybe bumped the butt of the gun and it just ripped the light mount right through the plastic rail on the frame. Couldn't remove it in game, will be breaking out the allen keys to take off the rail clamps on the light and seeing what I can do (if anything) about replacing the frame on the M9. Initial google results don't look good so all fingers in crossed mode for the moment.
You never find these things out until you actually use them though, so luckily it was only a sidearm problem that happened half way through a short Friday night game and I still had 2 nicely working AEGs with lights and my BFG.