The Roger Williams Park & Zoo in Rhode Island has its annual Jack-O-Lantern festival. Thanks to Rupesh to suggesting this meetup.
The entry fee for adults is $15 during the weekend ($10 on weekdays Mon-Thu).
The one photo they have online looks very intriguing, but, unfortunately, they do not allow tripods or monopods to be used, but they do allow photography. I am posting this event here as a possible opportunity for very unique night photography, but you will have to shoot at high ISO and with wide apertures to make this work hand-held at night.
The sun sets at 5:40 and I believe the best shots may come out of twilight background, but the event is open until midnight and they let people in until 11 p.m., so there is enough time for you to get there after work and to get a lot of shots and try out some special setups: perhaps we can put cameras on rocks, fences or hold them against lamp posts to steady the. Perhaps some if you may have gorilla clamps, sand bags and other means to steady the camera.
I will likely not be part of the meetup, but if anyone wants to host it, let me know.
Suggested equipment: camera capable of high ISO shooting, wide angle lenses with wide apertures. Perhaps a good idea to not bring that large backpack, but rather a small amount of equipment, which creates less suspicion. And if you do bring a monopod, it might be a good idea to hide that when entering.